NEW ORLEANS (AP) — All but about 50 of hundreds of research chimpanzees belonging to the National Institutes of Health should be retired to the national sanctuary in northwest Louisiana, and all of them should have plenty of room to play and climb, an NIH committee recommended Tuesday.

The NIH Council of Councils Working Group approved the proposal, which also calls for major cuts in grants to study chimps in laboratories and no return to breeding the great apes for research.