using a specific radioimmunoassay ( ria ) for alpha-atrial natriuretic polypeptide ( alpha-anp ) , we have demonstrated the presence of alpha-rat anp-like immunoreactivity ( alpha-ranp-li ) in the rat kidney which is considered to be a target organ for atrial natriuretic polypeptides released from the heart .
C0018792
anp
C0018787
heart