单词 | mesoderm |
释义 | mes·o·derm (mĕzə-dûrm′, mĕs-) n. 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. mes′o·dermal, mes′o·dermic adj. |
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