The dorsal part of the common foregut and the normal esophagus were negative for PAS. FGF7, 10 were expressed on the places where the PAS staining were positive.
PAS染色及FGF7、10免疫组化染色可见前肠背侧半及食管为阴性， 前肠腹侧半及气管部分为阳性；
PAS glucogen staining of cardiomyocytes was positive, glucogen in cytoplasm were stained to purple.
心肌细胞的 PAS 糖原染色呈阳性，胞浆内大量的糖原颗粒被染成品红色。
DOPA staining showed positive and immunohistochemical staining demonstrated that cells were stained by anti-human keratin.
免疫组织化学染色和免疫荧光染色提示角蛋白表达强阳性。
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