Positive test controls include: Mouse lung, Rat lung. The target is usually found in the following locations: Nucleus. Immunogen sequence: MGRKKIQITR IMDERNRQTL RKKGLNGCES PDADDYFEHS PLSEDRFSKL NEDSDFIFKR GPPGLPPQNF SMSVTVPVTS PNALSYTNPG SSLVSPSLAA. The