1·Platelet production begins with invagination of the megakaryocyte cell membrane and the formation of cytoplasmic channels and islands.
血小板的产生开始于巨核细胞的细胞膜内陷、形成细胞质渠道和岛屿(islands)。
2·Smooth skin of overall shape of evolution can be summarized by the following six epidermis movement epiboly, convexity, invagination, involution, ingression and delamination.
光滑表皮在拓扑变换中形态演化总体可概括为以下六种表皮发生机制：外包、外突、内陷、内卷、内移以及层裂。
3·In the course of development, the invagination of stomodeum occurs earlier than that of proctodeum at the third and the sixth nauplius stages respectively.
在发育过程中，口凹是在第三期无节幼虫时内陷形成，而原肛是在第六期无节幼虫时内陷形成的，所以口凹的发生早于原肛的发生。