低三下四之人
发表于 2025-4-1 04:35:03
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Perennial长期的
发表于 2025-4-1 08:12:22
Chaetaef leeches .); these characteristic structures are otherwise absent from these specialized annelids. Among the oligochaetes, chaetae are fewer and less diverse (Fig. 1 A) but also demonstrate a variety of taxonomically useful patterns (Brinkhurst 1982). Annelid chaetae have been discussed recently by
后天习得
发表于 2025-4-1 13:38:58
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Delirium
发表于 2025-4-1 17:22:11
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Interstellar
发表于 2025-4-1 21:48:10
Introductionhe end of me and the beginning of the rest of the universe”. Such a statement may be construed to imply that the structure of the skin of an organism might be expected to reflect the immediate environment in which it lives. This holds, by and large, for vertebrates, with the fishes and amphibians ha
Retrieval
发表于 2025-4-1 23:48:40
Intercellular Junctionsanism, providing the structural means by which groups of cells can adhere and interact. Within the integument of invertebrate organisms three main functional categories of junction can be identified: (1) Junctions that have an occluding function, allowing concentration gradients across an epithelium