| LDF | laser Doppler flux, laser Doppler fluxometry; limit dilution factor |
|---|---|
| LASER | Light Amplication by Stimulated Emission of Radiation |
| ALP | acute leukemia protocol; acute lupus pericarditis; alkaline phosphatase; alveolar proteinosis; anter... |
| ALT | alanine aminotransferase; argon laser trabeculoplasty; avian laryngotracheitis |
| Ar Kr | argon-krypton [laser] |