Immunogen sequence: CQFGTVQHVW KVSDLPRQWT PKNTSCDSGL GCQDTLMLIE SGPQVSLVLS KGCTEAKDQE PRVTEHRMGP GLSLISYTFV CRQEDFCNNL VNSLP. CD177 (NB1/HNA-2a and PRV-1 form) is a GPI-anchored glycoprotein present mainly on neutrophils. Its plasma membrane expression i