Provided below are ELISA kits targeting ES cell expressed Ras, a human protein encoded by ERAS. This protein is 233 amino acids long, with a mass of 25.3 kDa, and is a member of the Small GTPase superfamily, Ras family. This is reported to be a membrane protein. Other alias names for this protein include: GTPase ERas, E-Ras, embryonic stem cell-expressed Ras, small GTPase protein E-Ras, v-Ha-ras Harvey rat sarcoma viral oncogene homolog pseudogene, HRAS2, and HRASP.