本文分析5个离体转化的雄性小鼠唾液腺上皮细胞系的染色体,并与3个活体诱发肿瘤培养的细胞系的染色体作比较。5个离体转化细胞系中,4个是由二甲基苯丙蒽处理的培养,另一个是二甲基亚砜处理的对照。3个活体转化细胞系中,2个来自用苯丙芘诱发的肿瘤,另一个来自由二甲基苯丙蒽诱发的肿瘤。全部细胞系均在含10%小牛血清的Waymouths 752/ The chromosomes of the five isolated male mouse salivary gland epithelial cell lines were analyzed and compared with the chromosomes of three live cell lines that induced tumor growth. Of the 5 ex vivo transformed cell lines, 4 were cultures treated with dimethylbenzidine and the other was dimethyl sulfoxide treated controls. Of the 3 living transformed cell lines, 2 were from tumors induced with phenylpropanone and the other from tumors induced from dimethylbenzidine. All cell lines were in Waymouths 752/ with 10% calf serum