The sinuatrial node(SAN) and the atrioventricular node(AVN) were observed in 5 guinea pigs with a transmissive electron microscope.
对5例豚鼠心脏的窦房
和房
,
行透射电镜观察。
The sinuatrial node(SAN) and the atrioventricular node(AVN) were observed in 5 guinea pigs with a transmissive electron microscope.
对5例豚鼠心脏的窦房和房,行透射电镜观察。
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