Objective To investigate the expression of luteinizing hormone releasing hormone(LHRH) receptor in larynocarcinoma tissue as well as its affinity to LHRH-Pseudomonas aeruginosa exotoxin 40(PE40) on the surface of HEp-2 cells. Methods Fifty specimens of larynocarcinoma tissue and 20 specimens of adjacent noncancerous tissue collected by surgery were tested for expression of LHRH receptor by Western blot, for subcellular location of LHRH receptor by FA, and for affinity of LHRH receptor to LHRH-PE40 on the su...