This is a Polyclonal Antibody derived from Guinea Pig, unaltered (Unconjugated), suitable for ICC/IF, IHC, and WB applications. It's purified as a Stabilized antiserum, reactive with Human samples. Store short term at 2-8°C, long term in aliquots at -20°C, avoiding freeze/thaw cycles. Intended for Research use only. Created using a Synthetic peptide (C-KIISTTTL NKRR) of human keratin K4 coupled to KLH as the Immunogen. Formulated with 0.09% sodium azide and 0.5% BSA.