Cell Biolabs’ CytoSelect™ Proliferating Cell Nuclear Antigen (PCNA) ELISA Kit is an enzyme immunoassay developed for the detection and quantitation of PCNA from nuclear and whole cell extracts. The kit detects PCNA from mouse, rat and human, and has a detection sensitivity limit of 12.5 ng/mLPCNA. Each kit provides sufficient reagents to perform up to 96 assays including standard curve and unknown samples.