双胚层的具有两个胚层（外胚层和内胚层）的。
Derived from two embryonic germ layers, the ectoderm and the endoderm.
“胖型体质者”或“内胚层体型者”则处于这两类人之间。
肝脏由胚胎内胚层演变而来，胚胎期肝具有重要的造血功能。
Liver origins from endoderm and is an important hematopoietic organ in embryo.
中-内胚层诱导和神经诱导都需要平面的和垂直的诱导相互作用；
Both meso-endoderm and neural induction require planar as well as vertical inductive interactions;
芝麻籽大小的小蝌蚪现在已经分成了三层：外胚层、中胚层和内胚层。
The little tadpole about the size of a sesame seed is now made up of three layers: the ectoderm mesoderm and endoderm.
芝麻籽大小的小蝌蚪现在已经分成了三层：外胚层、中胚层和内胚层。
The little tadpole, about the size of a sesame seed, is now made up of three layers: the ectoderm, mesoderm and endoderm.
这些表皮细胞在胚胎学上把源于支气管生长过程中的前内脏叫内胚层。
These epithelial elements arise embryologically from foregut endoderm in the process of bronchial tubular growth.
上皮外未发现EC细胞，作者赞同肠道内分泌细胞的内胚层起源学说。
They had never been found elsewhere but in the intestinal epithelium and this phenomenon supports the theory that EC cells are derived from endoderm.
在外胚层和内胚层之间是中胚层，它形成肌肉、生殖腺、血管和排泄器官。
Between the ectoderm and endoderm is mesoderm, which forms the muscles, reproductive organs, blood vessels and excretory organs.
中胚层中间胚芽层，位于外胚层和内胚层之间，最终发育成结缔组织、肌肉、。
The middle embryonic germ layer, lying between the ectoderm and the endoderm, from which connective tissue, muscle, bone, and the urogenital and circulatory systems develop.
扬子鳄肝脏由早期胚胎前肠门边缘内陷的内胚层上皮和脏壁中胚层组织共同发育形成。
The liver of Alligator sinensis was formed by the endodermal epithelia invigilated from the edge of foregut door and by surrounding mesoderm during early stages of pre-natal development.
残留细胞注射部位形成畸胎瘤，瘤体组织中存在成熟的内胚层、中胚层和外胚层组织。
The residual cells were able to form teratoma at the injection site, and mature endoderm, mesoderm and ectoderm tissues could be found in teratoma tissues.
中胚层中间胚芽层，位于外胚层和内胚层之间，最终发育成结缔组织、肌肉、骨骼、泌尿系统及循环系统。
The middle embryonic germ layer lying between the ectoderm and the endoderm from which connective tissue muscle bone and the urogenital and circulatory systems develop.
当一个生物产生时，胚胎将形成三个胚层外胚层、内胚层和中胚层，然后再由这些胚层形成机体的组织和器官。
When an animal develops, embryos form three cellular or germ layers - ectoderm, endoderm and mesoderm - which then go on to form the body's organs and tissues.
研究表明，原始锰矿胚层是在茅口晚期黔中台沟相带内形成的富含锰质的热水沉积岩。
The studies indicate that the original manganese protore strata is manganese-rich thermal sediments generating within platform-gully zone.
研究表明，原始锰矿胚层是在茅口晚期黔中台沟相带内形成的富含锰质的热水沉积岩。
The studies indicate that the original manganese protore strata is manganese-rich thermal sediments generating within platform-gully zone.
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