Methods:After being routinely embedded in paraffin,complete serial sections of right atria were cut and stained with HE,Masson trichrome and with phosphotungstic acid hematoxylin,10 cases were observed under light microscope.

• 方法 :取 1 0例家兔心脏 ,常规石蜡包埋整心连续切片 ,HE染色、Masson三色染色和磷钨酸苏木素染色后 ,在光镜下观察。