目的：探讨富血小板血浆和自体松质骨微粒复合物在颌骨缺损修复中的疗效，及PR P在骨缺损修复中的作用。

Objective: to discuss the effect of repairing bone defect in rabbits with PRP and particulate of autogenous cancellous bone.

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布朗案结束了一个“分离但是平等”的时代，1896年时有一个案例称作“普莱西起诉富卡松案”Plessy v。

Brown ended the era of separate-but-equal, whose paradigm was the decision in 1896 of the case called Plessy v.

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