通过电镜，可以清晰看出癌的几个特征。图示上皮源性腺癌的几个特征，包括连接复合体(星号处表示：紧密连接，“十”字处显示：细胞间桥)，粘蛋白颗粒(标M的地方)和右上方中空的微绒毛也是腺癌的典型的特征。
By electron microscopy, features of a carcinoma can be seen. This adenocarcinoma demonstrates several features typical of a neoplasm of epithelial origin, including the junctional complex (tight junction at the asterisk and the desmosomes at crosses). The mucin granule (M) and lumenal microvilli at the upper right are also typical for an adenocarcinoma.