2Rao T V S, Bandyopadhyay S K. A comprehensive review of goat pox and sheep pox and their diagnosis [J]. Anim Health Res Rev, 2000,1(2):127~136.
3Dulbecco R, Ginsberg H S. Virology [M].3rd ed. Harper & Row Publishing Inc, 1980.
4Clement A D, Kikkawa Y. The type Ⅱ epithelial cells of the lung. Ⅳ Adaptation and behavior of isolated type Ⅱcells in culture [J]. Lab Invest, 1997,37:622~625.
5Mason R J, William M C. Type Ⅱ alveolar cells.Defender of the alveolus [J]. Am Rev Respir Dis, 1997, 115: 81~91.