| OLAS | oligoisoadenylate synthetase |
|---|---|
| PAIS | partial androgen insensitivity syndrome; phosphoribosylaminoimidazole synthetase; psychosocial adjus... |
| PFGS | phosphoribosyl formylglycinamide synthetase |
| PGS | peristent gross splenomegaly; Pettigrew syndrome; plant growth substance; postsurgical gastroparesis... |
| PGSI | prostaglandin synthetase inhibitor |