| LRF | latex and resorcinol formaldehyde; liver residue factor; luteinizing hormone-releasing factor |
|---|---|
| MER | mean ejection rate; medical emergency room; methanol extraction residue; murmur/energy ratio |
| res | research; resection; resident; residue; resistance |
| TR | recovery time; rectal temperature; repetition time; residual tuberculin; terminal repeat; tetrazoliu... |
| TZ | zymoplastic tuberculin [the dried residue which is soluble in alcohol] [Ger. Tuberculin zymoplastisc... |