Response of lymphocytes from cancer patients to human chorionic gonadotrophin.

Positive responses to human chroionic gonadotrophin (H.C.G.) were observed in the macrophage electrophoretic mobility test when lymphocytes from 34/44 patients with various types of cancer and from 7/21 patients with non-malignant disease were tested. Lymphocytes from some pregnant women also responded but those from parous women who were not pregnant did not respond. Positive responses were also obtained with H.C.G. sub-units but not with luteinising hormone.