BMP15 expression, regulation and function were examined in the hen ovary.
BMP15 is in the oocyte and expression is increased at around follicle selection.
Estradiol increases BMP15 mRNA expression in vitro.
BMP15 increases FSHR mRNA and decreases AMH mRNA and OCLN mRNA and protein.
Results provide evidence that the oocyte promotes follicle selection in the hen.