Sex Steroid Hormones and Related Substances Involved in Primordial Follicle Activation Kimura, Fuminori and Zheng, Luyi and Horikawa, Chisako and Tanaka, Yuji and Morimune, Aina and Murakami, Takashi, Journal of Mammalian Ova Research, 35, 3-12 (2018), DOI:http://dx.doi.org/10.1274/jmor.35.3