Relationship between uterine morphology and peripheral concentrations of sex steroid hormone in wild Japanese black bears (Ursus thibetanus japonicus) 論文 Masako Yamane・Yoshio Yamamoto・Tsunenori TSUJIMOTO・Takeshi Osawa ·2008-08-08 ·『Animal Reproduction Science』 113(1-4) pp. 251-262 doi:10.1016/j.anireprosci.2008.08.004