| HDF | host defense factor; human diploid fibroblast |
|---|---|
| HDRV | human diploid rabies vaccine |
| HE | half-scan with extrapolation; hard exudate; hektoen enteric [agar]; hemagglutinating encephalomyelit... |
| HEA | hexone-extracted acetone; human erythrocyte antigen |
| HEAT | human erythrocyte agglutination test |