Our Anti-Green Fluorescent Protein (GFP) chicken polyclonal primary antibody from Aves Labs is produced in-house and detects Green Fluorescent Protein (GFP) and related variants including eGFP, YFP, CFP and others.  It is a mixture of IgY fraction and affinity-purified antibodies and is great for use in ELISA, IHC, ICC, and WB.