Methods: The density and characteritic of distribution of mast cells and PCNA expression from 24 skin biopsy specimen by using an immunohistochemical and toluidine blue staining technique.

方法：分别采用免疫组化及改良甲苯胺蓝染色观察2 4例皮肤基底细胞癌PCNA表达，瘤巢间质肥大细胞数及两者相关性。

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Mast cells can be mostly found inside your skin, air ways and intestines.

肥大细胞通常集中在皮肤、气管、肠道中。

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Second, you have huge Numbers of Mast Cells in the skin under the eyes.

第二点，在眼睛下部的皮层内有极多的柱状细胞。

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