Positive test controls include: MCF7, HeLa, K-562, Jurkat, A-549. The target is usually found in the following locations: Nucleus. Immunogen sequence: AFSKQNEASS HIQDDMHLVI RKQLSSTVFK YKLIGIIGAV TMAGIMAADR SESPSLTQER ANLSDEQCTQ VTSLLQLVHS CSEQSPQASA LYYD