乳腺癌的实验研究最常使用大、小鼠,因此充分了解鼠类乳腺癌的特性是十分必要的。小鼠乳腺癌的组织类型较多,相当了解其发生过程,并有病毒、垂体和类脂醇内分泌刺激过盛、化学致癌物以及生殖龄后期的未知因素等发病因子。人的乳腺癌组织形态较单纯,发病过程与小鼠不同,发病因子不明,很可能不是病毒。 The experimental study of breast cancer is most commonly used for large and small mice, so it is essential to fully understand the characteristics of murine breast cancer. There are many tissue types of mouse breast cancer, and the process of its occurrence is well understood, and there are pathogenic factors such as viral, pituitary, and endogenous secretion of lipids, chemical carcinogens, and unknown factors in the later stages of reproductive age. The morphology of human breast cancer is relatively simple, and the pathogenesis is different from that of mice. The pathogenetic factor is unknown and it is probably not a virus.