zd34 copy.JPG (82580 bytes) 34.The concept of differentiation is demonstrated by this small adenomatous polyp of the colon. Note the difference in staining quality between the epithelial cells of the adenoma at the top and the normal glandular epithelium of the colonic mucosa below.

34.结肠小腺瘤性息肉与正常的结肠粘膜腺上皮细胞的区别：不同之处在于顶部腺瘤的上皮细胞和底部正常的结肠粘膜腺上皮细胞染色不同。