The lymphocytic micronuclei in the venous blood from 20 patients with a tumor at mouth cavity and jaw face were studied. The micronuclei were observed in all of the 20 cases.

• 本文采用微量血培养法测定了20例口腔颌面肿瘤患者外周血淋巴细胞微核,检出率为100%25;