前言： 目的：探讨对于需减数治疗的正畸疑难病例选择性拔除一组磨牙，以实现保留28个牙齿的可行性。
Objective:To discuss the feasibility of reservation 28 teeth by removal of a group of molars to difficult patients who need extraction treatment.
观察结果提示了柿树多倍体由未减数配子受精产生的可能性。
These phenomena show the possibility of producing polyploid of Diospyros kaki L. by the unred…
观察结果提示了柿树多倍体由未减数配子受精产生的可能性。
These phenomena show the possibility of producing polyploid of Diospyros kaki L. by the unred…
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