Positive test controls include: Mouse lung. The target is usually found in the following locations: Cytoplasm. Immunogen sequence: MPNPSSTSSP YPLPEEIRNL LADVETFVAD ILKGENLSKK AKEKRESLIK KIKDVKSIYL QEFQDKGDAE DGEEYDDPFA GPPDTISLAS ERYDKDDEAP SDGAQFPPIA AQ