Expression of Membrane Progestin Receptors (mPRs) in Granulosa Cells of Medaka Preovulatory Follicles Hagiwara, Akane and Ogiwara, Katsueki and Takahashi, Takayuki, Zoological Science, 33, 98-105 (2016), DOI:http://dx.doi.org/10.2108/zs150093