| MRIH | melanocyte[-stimulating hormone] release-inhibiting hormone |
|---|---|
| MRR | marrow release rate; maximum relation rate |
| PIF | paratoid isoelectric focusing variant protein; peak inspiratory flow; proinsulin-free; prolactin-inh... |
| PRIH | prolactin release-inhibiting hormone |
| RF | radial fiber; radio frequency; receptive field; regurgitant fraction; Reitland-Franklin [unit]; rela... |