A number of ELISA Kits are available that target p21WAF, an alias of the protein, cyclin dependent kinase inhibitor 1A. The human protein, encoded by the gene CDKN1A, is a member of the CDI family. The protein's cellular localization is indicated to be cytoplasmic and nuclear. Additional synonyms or past names for this protein may include: CAP20, CDKN1, CIP1, MDA-6, P21, SDI1, WAF1, p21CIP1. Homology is conserved in other species, such as Mouse, Rat, Frog.