| LEL | lower explosive limit; lowest effect level |
|---|---|
| UEL | upper explosive limit |
| LPD | Luteal Phase Defect |
| AP | accessory pathway; accounts payable; acid phosphatase; acinar parenchyma; action potential; active p... |
| APP | acute phase protein; alum-precipitated pyridine; aminopyrazolopyrimidine; amyloid peptide precursor;... |