“… PGI2 … progesterone ; PGI2 stimulated synthesis of progesterone by dispersed luteal cells; synthesis of PGI2 by luteal cells was greatest during the period of early CL development (…-HETE to dispersed luteal cells inhibited synthesis of progesterone and PGI2, while production of PGF2 alpha was unaffected.(ABSTRACT TRUNCATED AT 250 WORDS)”