using a well characterized preparation of hcg , consisting of a mixture of hcg labeled in the alpha-subunit with 125i and hcg labeled in the beta-subunit with 131i ( see preceding paper ) , the hormone-specific preferential retention by granulosa cells in vivo of the radiolabel originally associated with the beta-subunit of hcg has been confirmed and extended .
C1141639
preparation
C0106132
beta-subunit