Antibodies

Antibodies are glycoproteins that serve an essential role in the immune system to protects animals from infection, or the cytotoxic effects of foreign compounds, by binding with high affinity to invasive molecules; classified as primary or secondary.

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31 – 45 of 1,893,045 results

Invitrogen™ Goat anti-Rabbit IgG (H+L) Cross-Adsorbed Secondary Antibody, Alexa Fluor™ 594

Goat Polyclonal Secondary Antibody

Pricing & Availability
Specifications

Content And Storage	4°C, store in dark
Target Species	Rabbit
Host Species	Goat
Conjugate	Alexa Fluor 594
Applications	Flow Cytometry,Immunocytochemistry,Immunohistochemistry (Paraffin)
Form	Liquid
Isotype	IgG
Concentration	2 mg/mL
Antigen	Rabbit IgG (H+L) Cross-Adsorbed
Regulatory Status	RUO
Purification Method	Antigen affinity chromatography
Product Type	Secondary Antibody
Formulation	PBS with 5mM sodium azide; pH 7.5
Immunogen	Gamma Immunoglobins Heavy and Light chains.
Classification	Polyclonal
Primary or Secondary	Secondary

Invitrogen™ Goat anti-Rabbit IgG (H+L) Secondary Antibody, HRP

Goat Polyclonal Secondary Antibody

Pricing & Availability
Specifications

Content And Storage	4°C
Target Species	Rabbit
Host Species	Goat
Conjugate	HRP
Applications	ELISA,Immunohistochemistry (Paraffin),Immunoprecipitation,Western Blot
Form	Lyophilized
Isotype	IgG
Concentration	0.8 mg/mL
Antigen	Rabbit IgG (H+L)
Regulatory Status	RUO
Purification Method	Antigen affinity chromatography
Product Type	Secondary Antibody
Formulation	PBS with 50mM sucrose, 15mg/mL BSA and no preservative; pH 7.6
Immunogen	Purified Rabbit IgG, whole molecule.
Classification	Polyclonal
Primary or Secondary	Secondary

Invitrogen™ Goat anti-Rabbit IgG (H+L) Highly Cross-Adsorbed Secondary Antibody, Alexa Fluor™ 647

Goat Polyclonal Secondary Antibody

Pricing & Availability
Specifications

Content And Storage	4°C, store in dark
Target Species	Rabbit
Host Species	Goat
Conjugate	Alexa Fluor 647
Applications	Immunohistochemistry (Paraffin),Immunocytochemistry
Form	Liquid
Isotype	IgG
Concentration	2 mg/mL
Antigen	Rabbit IgG (H+L) Highly Cross-Adsorbed
Regulatory Status	RUO
Purification Method	Purified
Product Type	Secondary Antibody
Formulation	PBS with 5mM sodium azide; pH 7.5
Immunogen	Gamma Immunoglobins Heavy and Light chains.
Classification	Polyclonal
Primary or Secondary	Secondary

Invitrogen™ Goat anti-Mouse IgG (H+L) Cross-Adsorbed Secondary Antibody, Alexa Fluor™ 647

Goat Polyclonal Secondary Antibody

Pricing & Availability
Specifications

Content And Storage	4°C, store in dark
Target Species	Mouse
Host Species	Goat
Conjugate	Alexa Fluor 647
Applications	Flow Cytometry,Immunohistochemistry (Frozen),Immunohistochemistry (Paraffin),Immunocytochemistry,Multiplex Immunohistochemistry
Form	Liquid
Isotype	IgG
Concentration	2 mg/mL
Antigen	Mouse IgG (H+L) Cross-Adsorbed
Regulatory Status	RUO
Purification Method	Purified
Product Type	Secondary Antibody
Formulation	PBS with 5mM sodium azide; pH 7.5
Immunogen	Gamma Immunoglobins Heavy and Light chains.
Classification	Polyclonal
Primary or Secondary	Secondary

Invitrogen™ alpha Tubulin Monoclonal Antibody (DM1A)

Mouse Monoclonal Antibody

Pricing & Availability
Specifications

Content And Storage	4°C
Target Species	Amphibian,Bovine,Canine,Chicken,Gerbil,Guinea Pig,Human,Mouse,Pig,Rat
Host Species	Mouse
Conjugate	Unconjugated
Applications	Immunohistochemistry (Paraffin),Immunomicroscopy,Immunoprecipitation,Western Blot,Immunocytochemistry
Form	Liquid
Gene Accession No.	A6NHL2, P02550, P02552, P05213, P08070, P09642, P09643, P09644, P09645, P0DPH7, P32882, P68363, P68366, P68368, P68369, P68370, P68373, P81947, P81948, Q2XVP4, Q32KN8, Q3KRE8, Q3UX10, Q3ZCJ7, Q5XIF6, Q6AYZ1, Q6B856, Q6P9V9, Q6PEY2, Q71U36, Q9BQE3, Q9BVA1, Q9CWF2
Isotype	IgG1 κ
Concentration	0.5 mg/mL
Antigen	alpha Tubulin
Gene Symbols	LOC100726777, LOC106557476, Tuba1a, Tuba1b, TUBA1C, TUBA3C, TUBA3E, TUBA4A, TUBA8A, TUBA8B, TUBAL3, TUBB2B
Regulatory Status	RUO
Purification Method	Protein G
Gene Alias	1t; a1t; ALPHA 84C; alpha tubulin; alpha tubulin 84B; alpha[[1]] tubulin; alpha[[1]]-tubulin; alpha1; alpha1 tubulin; alpha1t; alpha1tub; alpha1tub84B; alpha1-tubulin; alpha84B; alphaT; alphat-1; alphatub; alpha-tub; alphaTub1; alphatub84; alphaTUB84B; alpha-tub84B; alphaTub84B-PA; alphatubulin; alpha-tubulin; Alpha-tubulin 1; Alpha-tubulin 2; Alpha-tubulin 3; Alpha-tubulin 3C; alpha-tubulin 3C/D; Alpha-tubulin 3D; Alpha-tubulin 3E; alpha-tubulin 4; Alpha-tubulin 6; alphaTubulin 84B; alpha-tubulin 84B; alpha-Tubulin at 84B; alpha-tubulin I; Alpha-tubulin II; alpha-tubulin III; Alpha-tubulin isotype M-alpha-1; alpha-tubulin isotype M-alpha-2; Alpha-tubulin isotype M-alpha-4; alpha-tubulin isotype M-alpha-6; alpha-tubulin TUB1; alpha-tubulin ubiquitous; alphaTubulin84B; Alpha-Tubulin84B; ALS22; anon-EST:Liang-1.59; anon-EST:Liang-2.30; AT25469p; aTub84B; a-tub84B; bA408E5.3; B-ALPHA-1; bcm948; BEST:LD32507; cb944; CG1913; CG1913-PA; chr3R:2914276..2914416; clone 1.59; clone 2.30; Detyrosinated tubulin alpha-1A chain; Detyrosinated tubulin alpha-1B chain; Detyrosinated tubulin alpha-1C chain; Detyrosinated tubulin alpha-3 chain; Detyrosinated tubulin alpha-3C chain; Detyrosinated tubulin alpha-3D chain; Detyrosinated tubulin alpha-3E chain; DM1alpha; Dmel\CG1913; Dmel_CG1913; DTA1; fb22g06; FLJ30169; H2 ALPHA; H2-ALPHA; hum-a-tub1; hum-a-tub2; I79_019110; K-ALPHA-1; l(3)84Bd; l(3)g3; lis3; LOC100726777; LOC100731885; LOC100857858; LOC101118307; LOC106557476; M[a]4; M[a]6; ms(3)nc33; nc33; RGD1565476; similar to alpha-tubulin isoform 1; similar to tubulin alpha 1; T; Talpha1; Talpha1 alpha-tubulin; TBA1_DROME; Testis-specific alpha-tubulin; Tub; Tub 84B; TUB1; Tub1C; Tub84B; TUBA1; Tuba-1; tuba1 protein; TUBA1/3/4; Tuba1a; tuba1a.L; tuba1a-a; tuba1a-b; TUBA1B; TUBA1C; tuba1l; tuba1l2; TUBA2; TUBA3; TUBA3C; TUBA3D; TUBA3E; Tuba4; Tuba4a; TUBA5; Tuba6; tuba8.S; tubA84B; tubal2; Tubalpha1; tubulin; tubulin 1 alpha-chain; tubulin 1alpha; tubulin alpha; tubulin alpha 1a; tubulin alpha 1a L homeolog; tubulin alpha 1b; tubulin alpha 1c; tubulin alpha 3; tubulin alpha 3c; tubulin alpha 3e; tubulin alpha 4a; tubulin alpha 6; tubulin alpha 8 S homeolog; tubulin alpha1; tubulin alpha-1 chain; tubulin alpha1 promoter; Tubulin alpha-1A chain; tubulin alpha-1B chain; Tubulin alpha-1C chain; tubulin alpha-1C chain-like; tubulin alpha-2 chain; Tubulin alpha-3 chain; Tubulin alpha-3C chain; tubulin alpha-3C/D chain; Tubulin alpha-3D chain; Tubulin alpha-3E chain; tubulin alpha-4 chain; Tubulin alpha-4A chain; Tubulin alpha-5 chain; tubulin alpha-5 chain-like; tubulin alpha-6 chain; tubulin alpha-8 chain; tubulin alpha-ubiquitous chain; tubulin B-alpha-1; Tubulin H2-alpha; tubulin K-alpha-1; tubulin(alpha1); tubulin, alpha 1; tubulin, alpha 1 (testis specific); tubulin, alpha 1, like; tubulin, alpha 1, like 2; tubulin, alpha 1a; tubulin, alpha 1b; tubulin, alpha 1c; tubulin, alpha 2; tubulin, alpha 3c; tubulin, alpha 3e; tubulin, alpha 4; tubulin, alpha 4a; tubulin, alpha 5; tubulin, alpha 6; tubulin, alpha, brain-specific; tubulin, alpha, ubiquitous; tubulin1alpha; tubulin84B; Tubulin-alpha1; Unknown (protein for MGC:133894); unnamed protein product; wu:fb22g06; wu:fb37a10; XELAEV_18019849mg; XELAEV_18020901mg; YML085C
Gene	TUBAL3
Product Type	Antibody
Gene ID (Entrez)	100135051, 100151951, 100153507, 100623355, 100726777, 100731885, 100734500, 100857247, 100857858, 10376, 106557476, 112714, 22142, 22143, 22145, 22146, 238463, 281555, 291081, 291287, 300218, 316531, 347733, 396426, 404053, 416694, 418166, 420883, 421169, 429035, 478702, 478918, 487148, 500929, 504244, 534900, 538631, 539882, 608138, 608864, 64158, 7277, 7278, 733594, 73710, 777775, 7846, 79861, 84790
Formulation	PBS with 0.09% sodium azide; pH 7.2
Immunogen	Native chick brain microtubules.
Classification	Monoclonal
Primary or Secondary	Primary
Clone	DM1A

Invitrogen™ Goat anti-Mouse IgG2b Cross-Adsorbed Secondary Antibody, HRP

Goat Polyclonal Secondary Antibody

Pricing & Availability
Specifications

Content And Storage	4°C
Target Species	Mouse
Host Species	Goat
Conjugate	HRP
Applications	ELISA,Immunohistochemistry,Western Blot
Form	Liquid
Isotype	IgG
Concentration	1.0 mg/mL
Antigen	Mouse IgG2b Cross-Adsorbed
Regulatory Status	RUO
Purification Method	Affinity chromatography
Product Type	Secondary Antibody
Formulation	PBS with 4mg/mL BSA, 40% glycerol and 0.19% Kathon™ CG; pH 7.4
Immunogen	Mouse IgG2b.
Classification	Polyclonal
Primary or Secondary	Secondary

Invitrogen™ BRG1 Recombinant Rabbit Monoclonal Antibody (SN20-03)

Rabbit Recombinant Monoclonal Antibody

Pricing & Availability
Specifications

Content And Storage	Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.
Target Species	Human,Mouse,Rat
Host Species	Rabbit
Conjugate	Unconjugated
Applications	Flow Cytometry,Immunohistochemistry (Frozen),Immunohistochemistry (Paraffin),Western Blot,Immunocytochemistry
Form	Liquid
Gene Accession No.	P51532, Q3TKT4, Q8K1P7
Isotype	IgG
Concentration	1 mg/mL
Antigen	BRG1
Gene Symbols	Smarca4
Regulatory Status	RUO
Purification Method	Protein A
Gene Alias	ATP-dependent helicase SMARCA4; b2b508.1Clo; b2b692Clo; BAF190; BAF190A; brahma protein-like 1; BRG1; brg-1; BRG1-associated factor 190A; BRM/SWI2-related gene 1; CSS4; FLJ39786; global transcription activator homologous sequence; homeotic gene regulator; HP1-BP72; hSNF2b; mitotic growth and transcription activator; MRD16; nuclear protein GRB1; protein brahma homolog 1; Protein BRG-1; RTPS2; SMARCA4; SNF2; Snf2b; SNF2beta; SNF2-beta; SNF2L4; SNF2LB; SNF2-like 4; sucrose nonfermenting-like 4; SW1/SNF; SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily a, member 4; SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 4; SWI2; transcription activator BRG1
Gene	Smarca4
Product Type	Antibody
Gene ID (Entrez)	171379, 20586, 6597
Formulation	TBS with 0.05% BSA, 40% glycerol and 0.05% sodium azide; pH 7.4
Immunogen	Synthetic peptide within human BRG1 aa 240-280.
Classification	Recombinant Monoclonal
Primary or Secondary	Primary
Clone	SN20-03

Invitrogen™ Bovine Serum Albumin Polyclonal Antibody

Rabbit Polyclonal Antibody

Pricing & Availability
Specifications

Content And Storage	4°C
Target Species	Bovine
Host Species	Rabbit
Conjugate	Unconjugated
Applications	ELISA,Immunohistochemistry (Paraffin),Immunoprecipitation,Western Blot,Immunocytochemistry
Form	Liquid
Gene Accession No.	P02769
Isotype	IgG
Concentration	2 mg/mL
Antigen	Bovine Serum Albumin
Gene Symbols	ALB
Regulatory Status	RUO
Purification Method	IgG fraction
Gene Alias	ALB; ALB protein; Alb1; Alb-1; albumin; albumin (32 AA); albumin (AA 34); albumin 1; Albza; ANALBA; Bos d 6; bovine albumin; bovine serum albumin; BSA; cell growth inhibiting protein 42; FDAH; GIG20; GIG42; growth-inhibiting protein 20; MGC179277; PRO0883; PRO0903; PRO1341; PRO1708; PRO2044; PRO2619; PRO2675; Serum albumin; UNQ696/PRO1341
Gene	ALB
Product Type	Antibody
Gene ID (Entrez)	280717
Formulation	PBS with 5mM sodium azide; pH 7.2
Immunogen	Bovine Serum Albumin.
Classification	Polyclonal
Primary or Secondary	Primary

Invitrogen™ Donkey anti-Mouse IgG (H+L) Highly Cross-Adsorbed Secondary Antibody, Alexa Fluor™ 790

Donkey Polyclonal Secondary Antibody

Pricing & Availability
Specifications

Content And Storage	4°C, store in dark
Target Species	Mouse
Host Species	Donkey
Conjugate	Alexa Fluor 790
Applications	Western Blot,Immunocytochemistry
Form	Liquid
Isotype	IgG
Concentration	2 mg/mL
Antigen	Mouse IgG (H+L) Highly Cross-Adsorbed
Regulatory Status	RUO
Purification Method	Purified
Product Type	Secondary Antibody
Formulation	PBS with 5mM sodium azide; pH 7.5
Immunogen	Gamma Immunoglobin.
Classification	Polyclonal
Primary or Secondary	Secondary

Invitrogen™ Donkey anti-Rat IgG (H+L) Highly Cross-Adsorbed Secondary Antibody, Alexa Fluor™ 647

Donkey Polyclonal Secondary Antibody

Pricing & Availability
Specifications

Content And Storage	4°C, store in dark, DO NOT FREEZE!
Target Species	Rat
Host Species	Donkey
Conjugate	Alexa Fluor 647
Applications	Flow Cytometry,Western Blot,Immunocytochemistry
Form	Liquid
Isotype	IgG
Concentration	2 mg/mL
Antigen	Rat IgG (H+L) Highly Cross-Adsorbed
Regulatory Status	RUO
Purification Method	Purified
Product Type	Secondary Antibody
Formulation	PBS with 5mM sodium azide; pH 7.5
Immunogen	Gamma Immunoglobins Heavy and Light chains.
Classification	Polyclonal
Primary or Secondary	Secondary

Invitrogen™ Human IgG1 Recombinant Isotype Control (13R4)

Human Recombinant Monoclonal Isotype Control

Pricing & Availability
Specifications

Content And Storage	Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.
Target Species	Not Applicable
Host Species	Human
Conjugate	Unconjugated
Applications	Flow Cytometry
Form	Liquid
Isotype	IgG1
Concentration	1 mg/mL
Antigen	Human IgG1
Regulatory Status	RUO
Purification Method	Protein A/G
Gene Alias	IGHG1; immunoglobulin heavy constant gamma 1 (G1m marker)
Product Type	Isotype Control
Formulation	PBS with no preservative; pH 7.4
Classification	Recombinant Monoclonal
Clone	13R4

Invitrogen™ Donkey anti-Mouse IgG (H+L) Highly Cross-Adsorbed Secondary Antibody, Alexa Fluor™ 647

Donkey Polyclonal Secondary Antibody

Pricing & Availability
Specifications

Content And Storage	4°C, store in dark
Target Species	Mouse
Host Species	Donkey
Conjugate	Alexa Fluor 647
Applications	Flow Cytometry,Immunohistochemistry,Immunocytochemistry
Form	Liquid
Isotype	IgG
Concentration	2 mg/mL
Antigen	Mouse IgG (H+L) Highly Cross-Adsorbed
Regulatory Status	RUO
Purification Method	Purified
Product Type	Secondary Antibody
Formulation	PBS with 5mM sodium azide; pH 7.5
Immunogen	Gamma Immunoglobins Heavy and Light chains.
Classification	Polyclonal
Primary or Secondary	Secondary

Invitrogen™ Phospho-SMAD2/SMAD3 (Ser465, Ser467, Ser423, Ser425) Polyclonal Antibody

Rabbit Polyclonal Antibody

Pricing & Availability
Specifications

Content And Storage	-20°C, Avoid Freeze/Thaw Cycles
Target Species	Mouse,Rat
Host Species	Rabbit
Conjugate	Unconjugated
Applications	ELISA,Immunohistochemistry (Paraffin),Western Blot,Immunocytochemistry
Form	Liquid
Gene Accession No.	O70436, P84025, Q62432, Q8BUN5
Isotype	IgG
Concentration	1 mg/mL
Antigen	Phospho-SMAD2/SMAD3 (Ser465, Ser467, Ser423, Ser425)
Gene Symbols	SMAD2, SMAD3
Regulatory Status	RUO
Purification Method	Affinity Chromatography
Gene Alias	7120426M23Rik; AU022421; hMAD-2; hMAD-3; hSMAD2; hSMAD3; HSPC193; HsT17436; JV15-2; JV18; JV18-1; LDS1C; LDS3; MAD (mothers against decapentaplegic, Drosophila) homolog 3; MAD homolog 2; MAD homolog 3; mad homolog JV15-2; mad protein homolog; MAD, mothers against decapentaplegic homolog 3; mad3; MADH2; MADH3; MADR2; mad-related protein 2; mMad2; mMad3; mother against DPP homolog 2; mothers against decapentaplegic homolog 2; Mothers against decapentaplegic homolog 3; mothers against DPP homolog 2; mothers against DPP homolog 3; pSMAD2; Sma- and Mad-related protein 2; SMA- and MAD-related protein 3; SMAD; Smad 2; Smad 3; SMAD family member 2; SMAD family member 3; SMAD, mothers against DPP homolog 2; SMAD, mothers against DPP homolog 3; Smad2; Smad-2; Smad3
Gene	SMAD3
Product Type	Antibody
Gene ID (Entrez)	17126, 17127, 25631, 29357
Formulation	PBS with 50% glycerol and 0.09% sodium azide; pH 7.3
Immunogen	Synthetic peptide.
Classification	Polyclonal
Primary or Secondary	Primary

Invitrogen™ Ty1 Tag Monoclonal Antibody (BB2)

Mouse Monoclonal Antibody

Pricing & Availability
Specifications

Content And Storage	-20°C or -80°C if preferred
Target Species	Tag
Host Species	Mouse
Conjugate	Unconjugated
Applications	ChIP Assay,Western Blot
Form	Liquid
Isotype	IgG1
Concentration	1.9 mg/mL
Antigen	Ty1 Tag
Regulatory Status	RUO
Purification Method	Protein A
Gene Alias	Ty1 Epitope Tag
Product Type	Antibody
Formulation	PBS with 0.05% sodium azide; pH 7.4
Immunogen	Ty1 tag (amino acid sequence EVHTNQDPLD).
Classification	Monoclonal
Primary or Secondary	Primary
Clone	BB2

Invitrogen™ IFNAR1 Monoclonal Antibody (85228), PE

Mouse Monoclonal Antibody

Pricing & Availability
Specifications

Content And Storage	4°C, store in dark, DO NOT FREEZE!
Target Species	Human
Host Species	Mouse
Conjugate	PE
Applications	Flow Cytometry
Form	Liquid
Gene Accession No.	P17181
Isotype	IgG1
Antigen	IFNAR1
Gene Symbols	Ifnar1
Regulatory Status	RUO
Purification Method	Protein A/G
Gene Alias	alpha-type antiviral protein; AVP; beta-type antiviral protein; CD118; CRF2-1; cytokine receptor class-II member 1; Cytokine receptor family 2 member 1; H3K1; Ifar; IFN R1; IFNalpha/beta R1; IFN-alpha/beta receptor 1; IFN-alpha/betaR; IFNalpha/betaR1; IFN-alpha/betaR1; IFN-alpha/betaRalpha; IFNalpha/beta-Ralpha; IFN-alpha-REC; IFNAR; Ifnar1; IFNBR; IFNR1; IFN-R-1; Ifrc; INF-a receptor; Infar; interferon (alpha and beta) receptor 1; interferon (alpha, beta and omega) receptor 1; interferon alpha and beta receptor subunit 1; interferon alpha/beta receptor 1; interferon receptor 1; interferon-alpha/beta receptor 1; interferon-alpha/beta receptor alpha chain; interferon-beta receptor 1; type I interferon receptor 1
Gene	Ifnar1
Product Type	Antibody
Gene ID (Entrez)	3454
Formulation	Buffered saline solution with ≤0.5% BSA and 0.09% sodium azide
Immunogen	Sf 21-derived recombinant human IFN-alpha/beta R1 Lys28-Lys436.
Classification	Monoclonal
Primary or Secondary	Primary
Clone	85228

Antibodies

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Invitrogen™ alpha Tubulin Monoclonal Antibody (DM1A) Greener ChoiceOffers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More

Invitrogen™ BRG1 Recombinant Rabbit Monoclonal Antibody (SN20-03) Greener ChoiceOffers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More

Invitrogen™ Bovine Serum Albumin Polyclonal Antibody Greener ChoiceOffers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More

Invitrogen™ Phospho-SMAD2/SMAD3 (Ser465, Ser467, Ser423, Ser425) Polyclonal Antibody Greener ChoiceOffers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More

Invitrogen™ Ty1 Tag Monoclonal Antibody (BB2) Greener ChoiceOffers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More

Invitrogen™ IFNAR1 Monoclonal Antibody (85228), PE Greener ChoiceOffers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More

Invitrogen™ alpha Tubulin Monoclonal Antibody (DM1A)

Invitrogen™ BRG1 Recombinant Rabbit Monoclonal Antibody (SN20-03)

Invitrogen™ Bovine Serum Albumin Polyclonal Antibody

Invitrogen™ Phospho-SMAD2/SMAD3 (Ser465, Ser467, Ser423, Ser425) Polyclonal Antibody

Invitrogen™ Ty1 Tag Monoclonal Antibody (BB2)

Invitrogen™ IFNAR1 Monoclonal Antibody (85228), PE