epichordal
上脊索
epi·chord·al /-ˈkɔrdḷ/ 形容詞
脊索上的
Ep·i·chor·dal a. Anat. Upon or above the notochord; -- applied esp. to a vertebral column which develops upon the dorsal side of the notochord, as distinguished from a perichordal column, which develops around it.
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