| OSS | over-the-shoulder strap |
|---|---|
| OTC | ornithine transcarbamylase; oval target cell; over-the-counter; oxytetracycline |
| POSS | proximal over-shoulder strap |
| SCO | sclerocystic ovary; somatic crossing-over; subcommissural organ |
| CIA | chemiluminescent immunoassay; chymotrypsin inhibitor activity; colony-inhibiting activity; congenita... |