SA nodes
(biochemistry) A zinc enzyme, widely distributed in mammalian tissues, that catalyzes the release of the N-terminal residue from a tripeptide.
Alternative spelling of exotrojan
(informal) Superintendent.
plural of SA node
解剖実習室で、学生たちは心拍のリズムがどのように始まるかを理解するために洞房結節を観察した。
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