介绍胎骨制作及保管方法，临床应用的情况。
This article reports its preparation and storage method, and its clinical application.
底露白胎，底施白釉，圈足圆润，胎骨坚致细白，底书“大清乾隆年制”六字二行楷书款。
Grin tire bottom, bottom white glaze, ring foot round, causing fetal bone Caine fine white bottom book "Great Qing Qianlong year, " the sixth Hang Kaishu paragraph two.
“镇墓兽”的胎骨制作， 一般在面部用圆雕、浮雕手法完成， 而器身则采用砍、削、粘接等工艺制作，特别是透雕手法以镂空部分的前后遮掩造成了丰富的层次感。
The techniques, especially the match between the engravings on the outer parts and the solid surfaces of the inner ones, create the effect of rich layers.
各足骨骨化灶范围随胎龄的增加而增大，骨化值与受精龄呈显著的正直线相关。
The range of the foot bone ossification sites increased with the fetal age, and there was an obvious positive linear correlation between the ossification degrees and the conceptional age.
种植体上部结构的设计要结合种植体在牙槽骨的位置、对领牙的形态、胎接触关系等方面综合考虑。
The design of the implant superstructure is related to the location of implant in the bone, shape of the opposing teeth, and occlusion contact relations.
结论：孕酮对离体胎鼠头盖骨成骨细胞的分化具有多重促进效果，但对细胞的增殖无影响。
Conclusion: Progesterone has a multi stimulating effect on the differentiation of fetal rat calvarial osteoblast, but no effect on cell proliferation.
方法胎鼠头盖骨成骨细胞在含有不同浓度孕酮的培养基中培养约20天。
Methods Fetal rat calvarial osteoblasts were cultured in the medium with different concentrations of progesterone for nearly 20 days.
结论孕酮从基因水平调节离体胎鼠成骨细胞骨钙素的生成，这种调节呈现时间及剂量依赖。
Conclusion progesterone was involved directly in osteocalcin production by regulating gene expression and this effect of progesterone was time and dose dependent.
胎龄30周的股骨远端，骨化中心呈现团块状成群的骨原细胞和成骨细胞，嗜碱性的类骨质填充于细胞间；
At the distal part of femur in fetus age of 30 weeks, a cluster of lump-like osteogenic cell, osteoblast and basophlous osteoid filled among cells appeared at the secondary ossification center.
自体、同胎及同种异体或同种异基因细胞均可作为组织工程骨可靠的细胞来源，单纯异种成骨细胞不能作为组织工程骨的细胞来源。
Autogenous, homogenous, allograft or allogeneic cell could be used in bone tissue engineering, whereas heterogenous cell could not be used in bone tissue engineering.
材料与方法：用组织块培养方法作SD大鼠胎鼠骨源性成骨细胞的体外培养，获取实验细胞模型并划分其分化阶段。
Materils and method: Obtaining experimental cellular model by isolating and culturing in vitro of osteoblasts from SD rats' fetal calvaria . Differentiation stages were divided .
目的：探讨胎儿骨骺中心与胎龄的关系，为预测胎龄及胎儿成熟度提供可靠的依据。
Objective: To study the relationship between fetal epiphyseal core and fetal age and maturity.
方法应用牙连同颌组织连续切片技术，对40例不同胎龄胎儿的上下颌骨作水平方向切片，观测并统计。结果胎儿28周后牙胚拥挤，上牙弓拥挤更显著；
Methods The maxillary and mandible of 40 fetuses (different ages) were cut horizontally with toothwithjaw continual tissue slices technique, observation and statistics.
方法应用牙连同颌组织连续切片技术，对40例不同胎龄胎儿的上下颌骨作水平方向切片，观测并统计。结果胎儿28周后牙胚拥挤，上牙弓拥挤更显著；
Methods The maxillary and mandible of 40 fetuses (different ages) were cut horizontally with toothwithjaw continual tissue slices technique, observation and statistics.
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