采取其他的番茄，切片并把它放在一侧。
Take the rest of the tomato, slice it up and serve it on the side.
方法：对45例不同胚(胎)龄时期的鞍旁结构行组织学连续切片，观察鞍侧腔壁结构及其内容物的形态学变化过程。
Methods: Serial histological sections of 45 human embryos and fetus were performed to observe the development and organization of the contents of the compartment.
结果：68例患者中，7例(10.3%)术中冷冻切片证实有一侧输尿管残端异常，其中6例为恶性肿瘤细胞侵润，1例为移行上皮不典型增生。
Results: 7 of 68 patients (10.3%) had evidence of ureteral abnormality on frozen section, 1 of 7 was mild atypia, other 6 was carcinoma in situ involving the distal ureter.
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