团结
发表于 2025-4-1 05:18:53
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失眠症
发表于 2025-4-1 08:48:41
https://doi.org/10.1007/978-3-658-16317-4olve three distinguishable kinds of cell behavior: cell segregation, cell migration and cell association. These developmental dynamics begin with the segregation of the germ layers at gastrulation (p. 47). The cells destined to become ectoderm, mesoderm and endoderm move, not as individuals, but as
emission
发表于 2025-4-1 12:02:35
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小臼
发表于 2025-4-1 16:10:51
https://doi.org/10.1007/978-3-663-13380-3struments, such as glass needles, pipettes and hair loops, he could dissect out a piece from any region of a blastula or gastrula and then transplant it wherever he chose, either elsewhere in the same embryo or into a different one. The manipulations are performed under a binocular dissecting micros
概观
发表于 2025-4-1 21:29:47
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