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primitive cardiovascular system
释义
primitive cardiovascular system
Encyclopedia
医学
心血管系统的发生
释
primitive cardiovascular system
原始心血管系统
人胚第3~5周,胚体内逐渐形成心管、动脉和静脉,构成卵黄循环、脐循环和胚体循环组成的系统。
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plume
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