常规石蜡切片及细胞学涂片时 ,ＨＥ染色镜检出现细胞核发灰 ,即细胞核内染色质及核仁显示不清 ,呈一片淡兰色云雾状 ,此现象严重时影响病理诊断。细胞核发灰的原因 ,一是石蜡切片的组织固定不及时 ,或组织块取材太厚 ,影响组织固定、脱水、透明和浸蜡所致。二是细胞学涂片中细 Conventional paraffin sections and cytology smears, HE staining microscopic examination of cell nuclei gray, that is, the nucleus chromatin and nucleolus unclear, was a light blue cloud-like, this phenomenon is serious when the pathological diagnosis. The causes of gray hair cells, one paraffin section of the tissue is not fixed in time, or the tissue block is too thick, affecting tissue fixation, dehydration, transparency and dip wax due. Second cytology smear thin