| ILA | insulin-like activity; International Leprosy Association |
|---|---|
| IRA | immunoradioassay; immunoregulatory alpha-globulin; inactive renin activity |
| JAS | Jenkins Activity Survey; juvenile ankylosing spondylitis |
| LCA | left circumflex artery; left coronary artery; leukocyte common antigen; lithocholic acid; lymphocyte... |
| LFA | left femoral artery; left frontal craniotomy; left fronto-anterior [fetal position]; leukocyte funct... |