| OLA | left occipitoanterior [fetal position] [Lat. occipito-laeva anterior]; oligonucleotide ligation assa... |
|---|---|
| PBA | polyclonal B-cell activity; pressure breathing assist; prolactin-binding assay; prune belly anomaly;... |
| PRA | panel-reactive antibody; phosphoribosylamine; physician recognition award; plasma renin activity; pr... |
| PrA-HPA | protein A hemolytic plaque assay |
| REA | radiation emergency area; radioenzymatic assay; renal anastomosis; right ear advantage |