tokens: One such element , 1P , was employed to clone from a rat pituitary cDNA expression library a novel 417-amino acid WD protein , designated PREB ( PRL regulatory element binding ) protein .
folded_tokens: one such element , 1p , be employ to clone from a rat pituitary cdna expression library a novel 417-amino acid wd protein , designate preb ( prl regulatory element binding ) protein .