San Francisco’s largest medical group denied Thursday that it discriminated by failing to offer memberships to seven gay doctors with large AIDS practices, while seeking applications from seven heterosexual physicians at the same hospital.

“We deplore the concept of discrimination and redlining, and we regret those terms have been used to describe this situation,” Dr. Tom McAfee, chief medical officer of Brown & Toland Medical Group, said at a hearing called by the city’s Board of Supervisors.