Theiler, Arnold, Sir, 1867-1936; Transvaal Department of Agriculture
(Pretoria: Government Printer and Stationery Office, 1909)
Conclusions: The injection of two-mule Tzaneen virus protected against four-mule Tzaneen virus, but not completely against the exposure virus. The two-mule Tzaneen virus, the four-mule Tzaneen virus, and the exposure virus ...