Immunological studies in Kaposi's sarcoma in Uganda.

An evaluation of humoral and cellular immune mechanisms was performed on patients with Kaposi's sarcoma in Uganda. Antibody responses and immunoglobulin levels were normal in all patients studied. Nevertheless, a striking impairment in the delayed hypersensitivity response to dinitrochlorobenzene was noted in patients with the "malignant" type of tumour.