Rabbit Secondary Antibodies
Secondary antibodies where rabbit is the host species. Secondary antibodies must be raised against the host species of the primary antibody. Includes different antigens, classifications, conjugations, and isotypes.
Host Species
- (2)
- (1,843)
Quantity
- (36)
- (39)
- (1)
- (1)
- (10)
- (314)
- (58)
- (157)
- (354)
- (40)
- (37)
- (24)
- (94)
- (17)
- (10)
- (52)
- (3)
- (1)
- (2)
- (63)
- (75)
- (268)
- (1)
- (4)
- (1)
- (24)
- (6)
- (1)
- (1)
- (1)
- (1)
- (10)
- (5)
- (47)
- (8)
- (11)
- (68)
Classification
- (1)
- (92)
- (1,651)
- (69)
- (31)
Target Species
- (9)
- (85)
- (24)
- (72)
- (24)
- (25)
- (69)
- (62)
- (1)
- (258)
- (13)
- (73)
- (52)
- (260)
- (21)
- (420)
- (1)
- (35)
- (135)
- (199)
- (1)
- (2)
- (1)
Applications
- (47)
- (180)
- (1,315)
- (513)
- (207)
- (74)
- (5)
- (318)
- (324)
- (7)
- (9)
- (204)
- (1,046)
- (92)
- (1)
- (238)
- (74)
- (108)
- (4)
- (1)
- (2)
- (8)
- (1)
- (1,263)
Filtered Search Results
Products from some of our suppliers do not display in filtered search results. Please
clear all filters
to see these products.
Search Within Results
Keyword Search:
Clear All
451
–
465
of
6,003
results
Rabbit anti-Chicken IgG Fc Secondary Antibody, Biotin, Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles. |
|---|---|
| Target Species | Chicken |
| Host Species | Rabbit |
| Conjugate | Biotin |
| Applications | ELISA,Immunohistochemistry,Western Blot |
| Isotype | IgG |
| Concentration | LYOPH |
| Antigen | IgG Fc |
| Regulatory Status | RUO |
| Purification Method | Affinity Purified |
| Dilution | Western Blot 1:2000 - 1:20000, ELISA 1:250000, Immunohistochemistry 1:1000 - 1:5000 |
| Classification | Polyclonal |
| Immunogen | Chicken IgG F(c) fragment |
| Reconstitution | Reconstitute with 1.0 ml deionized water (or equivalent). |
| Primary or Secondary | Secondary |
| Test Specificity | No reaction was observed against Chicken IgG F(ab). |
Rabbit anti-Canine IgM Heavy Chain Secondary Antibody, Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store lyophilized antibody at 4°C. Aliquot reconstituted liquid and store at -20°C. Avoid freeze-thaw cycles. |
|---|---|
| Target Species | Canine |
| Host Species | Rabbit |
| Conjugate | Unconjugated |
| Applications | ELISA,Immunohistochemistry,Western Blot |
| Isotype | IgM |
| Concentration | LYOPH |
| Antigen | IgM Heavy Chain |
| Gene Symbols | IGHM |
| Regulatory Status | RUO |
| Purification Method | Delipidation and Defibrination |
| Dilution | Western Blot 1:2000 - 1:10000, ELISA 1:20000 - 1:100000, Immunohistochemistry 1:1000 - 1:5000 |
| Gene Alias | Constant region of heavy chain of IgM, Ig Mu Chain C Region BOT, Ig Mu Chain C Region GAL, Ig Mu Chain C Region OU, immunoglobulin heavy constant mu, Immunoglobulin mu chain |
| Gene ID (Entrez) | 3507 |
| Classification | Polyclonal |
| Immunogen | Dog IgM u mu chain fragment |
| Reconstitution | Reconstitute with 2.0 ml deionized water (or equivalent). |
| Primary or Secondary | Secondary |
| Test Specificity | No reaction was observed against Dog IgG. |
Rabbit anti-Rat IgM Heavy Chain Secondary Antibody, Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store lyophilized antibody at 4°C. Aliquot reconstituted liquid and store at -20°C. Avoid freeze-thaw cycles. |
|---|---|
| Target Species | Rat |
| Host Species | Rabbit |
| Conjugate | Unconjugated |
| Applications | ELISA,Immunohistochemistry,Western Blot |
| Form | Antisera |
| Isotype | IgM |
| Concentration | LYOPH |
| Antigen | IgM Heavy Chain |
| Gene Symbols | IGHM |
| Regulatory Status | RUO |
| Purification Method | Delipidation and Defibrination |
| Dilution | Western Blot 1:2000 - 1:10000, ELISA 1:20000 - 1:100000, Immunohistochemistry 1:1000 - 1:5000 |
| Gene Alias | Constant region of heavy chain of IgM, Ig Mu Chain C Region BOT, Ig Mu Chain C Region GAL, Ig Mu Chain C Region OU, immunoglobulin heavy constant mu, Immunoglobulin mu chain |
| Gene ID (Entrez) | 3507 |
| Classification | Polyclonal |
| Immunogen | Rat IgM u mu chain |
| Reconstitution | Reconstitute with 2.0 ml deionized water (or equivalent). |
| Primary or Secondary | Secondary |
| Test Specificity | No reaction was observed against Rat IgG F(ab')2 or Rat IgG F(c). |
Rabbit anti-Equine IgM Heavy Chain Secondary Antibody, Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store lyophilized antibody at 4°C. Aliquot reconstituted liquid and store at -20°C. Avoid freeze-thaw cycles. |
|---|---|
| Target Species | Equine |
| Host Species | Rabbit |
| Conjugate | Unconjugated |
| Applications | ELISA,Immunohistochemistry,Western Blot |
| Isotype | IgM |
| Concentration | LYOPH |
| Antigen | IgM Heavy Chain |
| Gene Symbols | IGHM |
| Regulatory Status | RUO |
| Purification Method | Delipidation and Defibrination |
| Dilution | Western Blot 1:2000 - 1:10000, ELISA 1:20000 - 1:100000, Immunohistochemistry 1:1000 - 1:5000 |
| Gene Alias | Constant region of heavy chain of IgM, Ig Mu Chain C Region BOT, Ig Mu Chain C Region GAL, Ig Mu Chain C Region OU, immunoglobulin heavy constant mu, Immunoglobulin mu chain |
| Gene ID (Entrez) | 3507 |
| Classification | Polyclonal |
| Immunogen | Horse IgM u mu chain fragment |
| Reconstitution | Reconstitute with 2.0 ml deionized water (or equivalent). |
| Primary or Secondary | Secondary |
| Test Specificity | No reaction was observed against Horse IgG. |
Rabbit anti-Mouse IgG2b Heavy Chain Secondary Antibody, DyLight 405, Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles. |
|---|---|
| Target Species | Mouse |
| Host Species | Rabbit |
| Conjugate | DyLight 405 |
| Applications | Fluorophore-Linked Immunosorbent Assay,Immunocytochemistry/Immunofluorescence,Immunohistochemistry (Frozen),Immunohistochemistry (Paraffin),Western Blot |
| Isotype | IgG2b |
| Concentration | LYOPH |
| Antigen | IgG2b Heavy Chain |
| Regulatory Status | RUO |
| Purification Method | Affinity Purified |
| Dilution | Western Blot 1:10000, Immunocytochemistry/Immunofluorescence 1:5000, Immunohistochemistry-Paraffin, Immunohistochemistry-Frozen, Fluorophore-linked immunosorbent assay 1:20000 |
| Classification | Polyclonal |
| Immunogen | Mouse IgG2b chain |
| Reconstitution | Reconstitute with 100 ul deionized water (or equivalent). |
| Primary or Secondary | Secondary |
| Test Specificity | Minimal cross reactivity was noted against other Mouse immunoglobulin classes or subclasses. |
Rabbit anti-Mouse IgG (H+L) Secondary Antibody, DyLight 405, Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles. |
|---|---|
| Target Species | Mouse |
| Host Species | Rabbit |
| Conjugate | DyLight 405 |
| Applications | Fluorophore-Linked Immunosorbent Assay,Immunocytochemistry/Immunofluorescence,Western Blot |
| Isotype | IgG |
| Research Discipline | Adaptive Immunity, Immunology |
| Concentration | LYOPH |
| Antigen | IgG (H+L) |
| Regulatory Status | RUO |
| Purification Method | Affinity Purified |
| Dilution | Western Blot 1:10000, Immunocytochemistry/Immunofluorescence 1:5000, Fluorophore-linked immunosorbent assay 1:20000 |
| Classification | Polyclonal |
| Immunogen | Mouse IgG, whole molecule |
| Reconstitution | Reconstitute with 100 ul deionized water (or equivalent). |
| Primary or Secondary | Secondary |
| Test Specificity | This antibody will react with heavy chains of Mouse IgG and with light chains of most Mouse immunoglobulins. |
Rabbit anti-Goat IgG (H+L) Secondary Antibody, FITC (Pre-adsorbed), Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store at 4C. Do not freeze. |
|---|---|
| Target Species | Goat |
| Host Species | Rabbit |
| Conjugate | FITC |
| Applications | Flow Cytometry,Immunomicroscopy |
| Isotype | IgG |
| Research Discipline | Adaptive Immunity, Immunology |
| Concentration | 1.0mg/mL |
| Antigen | IgG (H+L) |
| Regulatory Status | RUO |
| Purification Method | Affinity purified |
| Dilution | Flow Cytometry 1:20-1:2000, Immunomicroscopy 1:20-1:2000 |
| Classification | Polyclonal |
| Immunogen | Purified Goat IgG (H&L) |
| Primary or Secondary | Secondary |
| Test Specificity | Based on IEP, this antibody reacts with heavy gamma chains on goat IgG and light chains on all goat immunoglobulins. This antibody has been pre-adsorbed against human, mouse, and rat IgG. |
Rabbit F(ab')2 anti-Goat IgG (H+L) Secondary Antibody, HRP (Pre-adsorbed), Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store lyophilized antibody at 4°C. Mix reconstituted liquid with an equal volume of glycerol, aliquot contents and freeze at -20°C or below for long term storage. |
|---|---|
| Target Species | Goat |
| Host Species | Rabbit |
| Conjugate | HRP |
| Applications | ELISA,Immunohistochemistry,Immunohistochemistry (Paraffin),Western Blot |
| Isotype | IgG |
| Research Discipline | Adaptive Immunity, Immunology |
| Concentration | LYOPH |
| Antigen | IgG (H+L) |
| Regulatory Status | RUO |
| Purification Method | Affinity purified |
| Dilution | Western Blot 1:200-1:5000, ELISA 1:200-1:5000, Immunohistochemistry 1:500-1:5000, Immunohistochemistry-Paraffin |
| Classification | Polyclonal |
| Immunogen | Purified Goat IgG (H&L) |
| Reconstitution | Rehydrate with 0.55 ml of deionized water and let stand 30 minutes at room temperature to dissolve. (Product has been overfilled to ensure complete recovery.) Centrifuge to remove any particulates. Prepare fresh working dilution daily. |
| Primary or Secondary | Secondary |
| Test Specificity | Based on IEP, this antibody reacts with heavy gamma chains on goat IgG and light chains on all goat immunoglobulins. This antibody has been pre-adsorbed against human, mouse, and rat IgG. |
Rabbit anti-Goat IgG (H+L) Secondary Antibody (Pre-adsorbed), Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store at 4C. Do not freeze. |
|---|---|
| Target Species | Goat |
| Host Species | Rabbit |
| Conjugate | Unconjugated |
| Applications | ELISA,Immunoassay,Immunohistochemistry,Western Blot |
| Isotype | IgG |
| Research Discipline | Adaptive Immunity, Immunology |
| Concentration | 4.5mg/mL |
| Antigen | IgG (H+L) |
| Regulatory Status | RUO |
| Purification Method | Affinity purified |
| Dilution | Immunoassay |
| Classification | Polyclonal |
| Immunogen | Purified Goat IgG (H&L) |
| Primary or Secondary | Secondary |
| Test Specificity | Based on IEP, this antibody reacts with heavy gamma chains on goat IgG and light chains on all goat immunoglobulins. This antibody has been pre-adsorbed against human, mouse, and rat IgG. |
Rabbit anti-Sheep IgG (H+L) Secondary Antibody, Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles. |
|---|---|
| Target Species | Sheep |
| Host Species | Rabbit |
| Conjugate | Unconjugated |
| Applications | Dot Blot,ELISA,Fluorophore-Linked Immunosorbent Assay,Immunocytochemistry/Immunofluorescence,Immunohistochemistry,Immunohistochemistry (Paraffin),Western Blot |
| Isotype | IgG |
| Research Discipline | Adaptive Immunity, Immunology |
| Antigen | IgG (H+L) |
| Regulatory Status | RUO |
| Purification Method | Affinity Purified |
| Dilution | Western Blot 1:2000 - 1:10000, ELISA 1:50000 - 1:200000, Immunohistochemistry 1:1000 - 1:5000, Immunocytochemistry/Immunofluorescence, Immunohistochemistry-Paraffin 1:200-1:500, Dot Blot, Fluorophore-linked immunosorbent assay |
| Classification | Polyclonal |
| Immunogen | Sheep IgG whole molecule |
| Primary or Secondary | Secondary |
| Test Specificity | This product was prepared from monospecific antiserum by immunoaffinity chromatography using Sheep IgG coupled to agarose. Assay by immunoelectrophoresis resulted in a single precipitin arc against anti-Rabbit Serum, Sheep IgG and Sheep Serum. |
Rabbit anti-Chicken IgG F(ab')2 Secondary Antibody, Rhodamine, Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles. |
|---|---|
| Target Species | Chicken |
| Host Species | Rabbit |
| Conjugate | Rhodamine |
| Applications | Flow Cytometry,Fluorophore-Linked Immunosorbent Assay,Immunocytochemistry/Immunofluorescence,Western Blot |
| Isotype | IgG |
| Concentration | LYOPH |
| Antigen | IgG F(ab')2 |
| Regulatory Status | RUO |
| Purification Method | Affinity Purified |
| Dilution | Western Blot, Flow Cytometry 1:500 - 1:2500, Immunocytochemistry/Immunofluorescence 1:1000 - 1:5000, Fluorophore-linked immunosorbent assay 1:10000 - 1:50000 |
| Gene Alias | immunoglobulin heavy constant gamma 1 (G1m marker) |
| Classification | Polyclonal |
| Immunogen | Chicken IgG F(ab')2 fragment |
| Reconstitution | Reconstitute with 1.0 ml deionized water (or equivalent). |
| Primary or Secondary | Secondary |
| Test Specificity | No reaction was observed against Chicken IgG F(c). |
Invitrogen™ F(ab')2-Rabbit anti-Mouse IgG (H+L) Cross-Adsorbed Secondary Antibody, FITC
F(ab')2-Rabbit Polyclonal Secondary Antibody
| Content And Storage | Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles. Store in the dark. |
|---|---|
| Target Species | Mouse |
| Host Species | Rabbit |
| Conjugate | FITC |
| Applications | Flow Cytometry,Immunocytochemistry |
| Form | Liquid |
| Isotype | IgG |
| Concentration | 1 mg/mL |
| Antigen | Mouse IgG (H+L) Cross-Adsorbed |
| Regulatory Status | RUO |
| Purification Method | Affinity chromatography |
| Product Type | Secondary Antibody |
| Formulation | PBS with 0.09% sodium azide; pH 7.2 |
| Immunogen | Purified murine IgG. |
| Classification | Polyclonal |
| Primary or Secondary | Secondary |
Rabbit anti-Rat IgG (H+L) Secondary Antibody, HRP, Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store lyophilized antibody at 4°C. Mix reconstituted liquid with an equal volume of glycerol, aliquot contents and freeze at -20°C or below for long term storage. |
|---|---|
| Target Species | Rat |
| Host Species | Rabbit |
| Conjugate | HRP |
| Applications | ELISA,Immunohistochemistry,Immunohistochemistry (Paraffin),Western Blot |
| Isotype | IgG |
| Research Discipline | Adaptive Immunity, Immunology |
| Concentration | LYOPH |
| Antigen | IgG (H+L) |
| Regulatory Status | RUO |
| Purification Method | Affinity purified |
| Dilution | Western Blot 1:200-1:5000, ELISA 1:200-1:5000, Immunohistochemistry 1:500-1:5000, Immunohistochemistry-Paraffin |
| Classification | Polyclonal |
| Immunogen | Purified Rat IgG (H&L) |
| Reconstitution | Rehydrate with 1.1 ml of deionized water and let stand 30 minutes at room temperature to dissolve. (Product has been overfilled to ensure complete recovery.) Centrifuge to remove any particulates. Prepare fresh working dilution daily. |
| Primary or Secondary | Secondary |
| Test Specificity | Based on IEP, this antibody reacts with heavy gamma chains on rat IgG and light chains on all rat immunoglobulins |
Rabbit anti-Sheep IgG F(ab')2 Secondary Antibody, Rhodamine, Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles. |
|---|---|
| Target Species | Sheep |
| Host Species | Rabbit |
| Conjugate | Rhodamine |
| Applications | Flow Cytometry,Fluorophore-Linked Immunosorbent Assay,Immunocytochemistry/Immunofluorescence |
| Isotype | IgG |
| Concentration | LYOPH |
| Antigen | IgG F(ab')2 |
| Regulatory Status | RUO |
| Purification Method | Affinity Purified |
| Dilution | Flow Cytometry 1:1:10 - 1:1000, Immunocytochemistry/Immunofluorescence 1:1000 - 1:5000, Fluorophore-linked immunosorbent assay 1:10000 - 1:50000 |
| Gene Alias | immunoglobulin heavy constant gamma 1 (G1m marker) |
| Classification | Polyclonal |
| Immunogen | Sheep IgG F(ab')2 fragment |
| Reconstitution | Reconstitute with 1.0 ml deionized water (or equivalent). |
| Primary or Secondary | Secondary |
| Test Specificity | No reaction was observed against Sheep IgG F(c). |
Rabbit anti-Equine IgG Fc Secondary Antibody, Texas Red, Novus Biologicals™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Rabbit Polyclonal Antibody
| Content And Storage | Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles. |
|---|---|
| Target Species | Equine |
| Host Species | Rabbit |
| Conjugate | Texas Red |
| Applications | Flow Cytometry,Fluorophore-Linked Immunosorbent Assay,Immunocytochemistry/Immunofluorescence |
| Isotype | IgG |
| Concentration | LYOPH |
| Antigen | IgG Fc |
| Regulatory Status | RUO |
| Purification Method | Affinity Purified |
| Dilution | Flow Cytometry 1:1:10 - 1:1000, Immunocytochemistry/Immunofluorescence 1:1000 - 1:5000, Fluorophore-linked immunosorbent assay 1:10000 - 1:50000 |
| Classification | Polyclonal |
| Immunogen | Horse IgG F(c) fragment |
| Reconstitution | Reconstitute with 1.0 ml deionized water (or equivalent). |
| Primary or Secondary | Secondary |
| Test Specificity | No reaction was observed against Horse IgG F(ab). |