生发层在角质层的下面，生发层细胞有很强的分裂增生能力，它增生的细胞逐渐向表层推移，形成表皮的各层细胞。
The germinal layer in embryonic period consists of osteoprogenitor cells and osteoblast, which has the multiplication capacity and ability of bone formation.
在胚胎期和出生后的成长期内生发层由数层细胞组成其外层为成纤维细胞样骨祖细胞,内层为成骨细胞,二者皆有增殖能力,且有较强的成骨能力。
参考来源 - 藻酸钙凝胶复合同种异体胚胎骨膜细胞悬液移植修复骨缺损的实验研究·2,447,543篇论文数据，部分数据来源于NoteExpress
研究结果表明，在正常生理条件下，皮肤从空气中通过扩散输运所获取的氧仅限于表皮角化层，而不能到达表皮生发层。
Results from our model revealed that oxygen uptake by diffusion from the air, under normal conditions, was limited to the out most layer of the skin and did not penetrate beyond the germinal layer.
在用手摸了摸墙后，曾做过建筑工人的Demczur先生发现，墙壁是由数层一英尺厚的面板砌成，面板是由一种叫石膏灰胶纸夹板的人工合成隔板材料做成的。
After feeling the wall, Mr Demczur, a former builder, saw that it was made of layers of inch-thick panels of synthetic partition material known as sheetrock.
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