| SFFV | spleen focus-forming virus |
|---|---|
| SNV | spleen necrosis virus |
| SP | sacroposterior; sacrum to pubis; salivary progesterone; schizotypal personality; semi-private [room]... |
| SPC | salicylamide, phenacetin, and caffeine; seropositive carrier; single palmar crease; single photoelec... |
| SRA | segmental renal artery; serum renin activity; spleen repopulating activity |