在 2 1世纪来临之际 ,我们愿以肿瘤分子生物学的研究论著作为本卷第一期的首选内容 ;我们相信 ,它将会给读者带来有意义的信息。方法学的深入和更新对肿瘤研究起着相当关键的作用。在本期内 ,马向东等报道采用免疫荧光标记技术、激光扫描共聚焦方法观察肝癌及正常肝细胞的间隙 At the dawn of the 21st century, we would like to use the research literature on molecular biology of tumors as the preferred content of the first issue of the volume; we believe that it will bring meaningful information to readers. The in-depth and updated methodologies play a key role in tumor research. In the current period, Ma Xiangdong et al. reported the use of immunofluorescence labeling techniques and laser scanning confocal methods to observe the gap between liver cancer and normal liver cells.