| 1. | Such techniques include serological methods , biochemical analysis , breeding experiments , comparative morphology , cytological examination , and rna analysis , in addition to the more established procedures of comparative anatomy
这些技术包括血清学方法，生物化学分析，繁育试验，比较形态学，细胞学检测， rna分析，还有新创建的比较解剖学程序。 |
