immunologically , pp14 is related to progestagen-associated endometrial protein ( pep ) , alpha-2 pregnancy-associated endometrial protein ( alpha-2 , peg ) , endometrial protein 15 ( ep15 ) , alpha-uterine protein ( aup ) and chorionic alpha-2 microglobulin ( cag-2 ) .
C0032974
pregnancy
C0033684
protein