| SHS | Sayre head sling; sheep hemolysate supernatant |
|---|---|
| SLEA | sheep erythrocyte antibody |
| SPA | salt-poor albumin; sheep pulmonary adenomatosis; sperm penetration assay; spinal progressive amyotro... |
| SRBC | sheep red blood cells |
| SRC | sedimented red cells; sheep red cells |