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Activin is a glycoprotein that is produced within granulosa cells in females and sertoli cells in the male. The target tissue for activiin in the male is the epididymis whilst in the female it is the anterior pituitary gland, specifically gonadotroph cells. In males and females activin stimulates FSH secretion.
 
Activin is a glycoprotein that is produced within granulosa cells in females and sertoli cells in the male. The target tissue for activiin in the male is the epididymis whilst in the female it is the anterior pituitary gland, specifically gonadotroph cells. In males and females activin stimulates FSH secretion.
 
===Prostaglandin F2α===
 
===Prostaglandin F2α===
Prostaglanin is a C<sub>2</sub>O fatty acid and is produced within the . The target tissue in the female is
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Prostaglanin is a C<sub>2</sub>O fatty acid and is produced within the uterine endometrium and vesicular glands. The target tissue in the female is the corpus luteum, uterine myometrium and ovulatory folicles. In the male foetus prostaglandin affects the the metabolic activity of spermatozoa and epididymal contractions. In the female prostaglandin results in luteolysis, the induction of tone and contractions within the uterus and ovulation.
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===Human Chorionic Gonadotrophin (PGE<sub>2</sub>)===
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PGE<sub>2</sub> is another form of prostaglandin that is produced by the ovary, uterus and embryonic membranes. It's target tissue in females is the corpus luteum and the oviduct where it helps induce ovulation and the secretion of progesterone from the corpus luteum.   
 
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{| style="width:75%; height:200px" border="1"
  
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