He suggested that bees which make hexagonal cells evolved in steps from bees that made roundcells, under pressure from natural selection to economise wax.
RESULTS: Satellite cells grew and differentiated well, and finally the single nucleus roundcells changed into the multinuclear cast myotube shaped cells gradually.
结果：卫星细胞生长、分化良好，最终由单个核圆形细胞逐渐变化为多个核的长圆柱的肌管状细胞。
3
At high magnification, the nests of carcinoid tumor have a typical endocrine appearance with small roundcells having small round nuclei and pink to pale blue cytoplasm.