MATERIALS: Fresh specimens of male cadaveric femur were from Department of Anatomy, Norman Bethune Medical University.
材料：新鲜尸体股骨标本由白求恩医科大学解剖教研室提供，均为男性。
Combining with the morphology and anatomy, the relationship between the development of male flower on Betula and these endogenous hormones was researched.
结合白桦雄花形态解剖观察，研究了这些内源激素与白桦雄花发育的关系。
Combining with the morphology and anatomy, the relationship between the development of male flower on Betula and these endogenous hormones was researched.
结合白桦雄花形态解剖观察，研究了这些内源激素与白桦雄花发育的关系。
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