based on the synthesis of dna in the presence of insulin and tissue secretory responses to prolactin , the responsive tissues were found in young goats up to 3 month of age ( prolactin responsive only up to 24 days of age ) , in mature virgin goats at the end of breeding season , mature virgin goats with precocious lactation and in nulliparous goats from the 8th week of pregnancy .
C1327616
secretory
C0033371
prolactin