Positive test controls include: SKOV3, A-549, U2OS, Mouse heart. The target is usually found in the following locations: Secreted. Immunogen sequence: GQGGGLGTQP LPAQGPQFSG LVSSLPPGVP CPEWSTAWGP CSTTCGLGMA TRVSNQNRFC RLETQRRLCL SRPCPPSRGR SPQNSAF. Wisp2