From a Facebook post by Kelvin L Noel:
https://www.facebook.com/noelkelvin/posts/675707729192307

Short excerpt:
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In 1961, at the Litton Bionetics laboratory (which was working with the Navy's Biomedical Research Laboratory, in association with the Univeristy of California), retroviral experiments with African green monkeys and human T-cell leukemia were being conducted under the auspices of the National Institute of Health (contract # SVCP PR#8 NIH #71-2025).

[The experiments] consisted of taking monkey viruses that were harmless to humans, recombining them with DNA, RNA and enzymes from other animal viruses that were known to cause leukemias, lymphomas, and sarcomas; then causing them to jump species. The new mutant viruses were cultured into human white blood cells in some studies, and in other studies human fetal tissues, which [reportedly] produced "immune-system destroying, cancer-causing viruses". The scientist who was directing the tests was Dr. Robert Gallo.
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