鉴定恶性细胞和预测其生物学行为方面尚无可靠的组织病理学标准。有关研究表明转化细胞表型改变与其膜表面糖结合蛋白改变有关。糖结合蛋白在细胞间相互作用和各种细胞功能中起重要作用。凝集素是一组植物或动物来源的糖结合蛋白，每一种凝集素在细胞表面和细胞器中都有其特异? There are no reliable histopathological criteria for identifying malignant cells and predicting their biological behavior. Relevant researches show that the phenotypic changes of transformed cells are related to the changes of the carbohydrate binding proteins on the membrane surface. Sugar-binding proteins play an important role in cell-cell interactions and various cellular functions. Lectins are a group of carbohydrate-binding proteins of plant or animal origin. Each lectin has its own specificity on the cell surface and in organelles.