The Primate Research Centers Program of the National Institutes of Health -- Human melanoma and leukemia associated antigens defined by nonhuman primate antisera -- Cytogenetics of the squirrel monkey (Saimiri sciureus) -- Fetal hormones and their effect on the differentiation of the central nervous system in primates -- Immunology of borreliosis in nonhuman primates -- Teratogenic effects of triamcinolone on the skeletal and lymphoid systems in nonhuman primates -- Tetrahydrocannabinol-induced manifestations of the "marihuana syndrome" in group-living macaques -- Effect of ambient levels of ozone on monkeys -- Response of the nonhuman primate to polychlorinated biphenyl exposure -- Cyclical changes in the sexual skin of female rhesus: relationships to mating behavior and successful artificial insemination -- Endocrine and metabolic responses to cold in baboons -- Immunologic and morphologic effects of vasectomy in the rhesus monkey.