英语语法分析

PGC from genital ridge and mesenterium of human embryo was incubated on fibroblast feeder layers for subculture.

从人胚胎生殖嵴、肠系膜中消化分离的原始生殖细胞，将其接种在人子宫内膜成纤维细胞饲养层上传代培养。

The cells show fibroblast-like irregular appearance, many cytoplasm ecptoma, puff and large nucleus with obvious nucleoli.

细胞主要呈“成纤维样”，但体积较大、形状不规则、细胞质突起多，细胞核大而疏松，核仁明显。

Objective To study the role of fibroblast in aseptic loosening.

目的探讨成纤维细胞在无菌性松动中的作用。