Newcomer Supply Trichrome Stain, Gomori One-Step, Light Green procedure, with included microwave modification, uses a one-step solution combining a plasma stain and a connective tissue stain to differentially demonstrate collagen and muscle fibers. Newcomer Supply Trichrome Stain, Gomori One-Step, Light Green for frozen muscle biopsies uses a one-step solution that combines a plasma stain with a connective tissue stain. This procedure provides excellent staining results on fresh non-fixed frozen muscle biopsy sections for the demonstration of muscle fiber morphology and surrounding connective tissue elements. Shelf Life is 1 year from date of manufacture. Store at 2-8°C.