Rentfrow, L R Effect of estrus synchronization with Syncro-Mate-B((R)) on serum luteinizing hormone, progesterone and conception rate in Brahman heifers. [electronic resource] - Theriogenology Sep 1987 - 355-62 p. digital Publication Type: Journal Article ISSN: 0093-691X Standard No.: 10.1016/0093-691x(87)90023-9 doi