| EM | early memory; ejection murmur; electromagnetic; electron micrograph; electron microscopy, electron m... |
|---|---|
| PLES | parallel-line equal space |
| PTA | parallel tubular arrays; parathyroid adenoma; percutaneous transluminal angioplasty; peroxidase-labe... |
| AES | acetone-extracted serum; American Electroencephalographic Society; American Encephalographic Society... |
| ESCA | electron spectroscopy for chemical analysis |