"The NIH has received almost $56m in royalties for its discoveries, the agency says. This money is put back into its research.

The press agency reported that two leading researchers, Anthony Fauci, head of the National Institute of Allergy and Infectious Diseases and his deputy, Clifford Lane, received payments relating to their development of interleukin 2 as a treatment for HIV/AIDS. Dr Lane told the BMJ that the payment was part of his federal compensation. He explained that the government patented the development and shared the payments it received with the inventors. Since 1997 he has received about $45 000 he says. The institutes awarded $36m in grants for studies to test the treatment."

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC545012/