Dennis John O'Callaghan (born July 26, 1940 in New Orleans, Louisiana) is an American virologist, immunologist, and biochemist.
[1] His Ph.D. thesis is entitled Biochemical studies of equine abortion virus replication in L-M cells.
[1][3] At the University of Alberta Medical Center in Edmonton, Canada, O'Callaghan was from 1968 to 1970 a postdoctoral research fellow and from 1970 to 1971 an assistant professor of biochemistry.
[1] In the early 1990s, on behalf of Research Corporation Technologies, Inc. headquartered in Tucson, Arizona, he patented an antibody protective against EHV-1.
"[1] In June 1967 in Jackson, Mississippi, he married Helen Frances Briscoe (1941–2018), a medical geneticist and watercolorist.