作者: E. C. G. Maddock
DOI: 10.1017/S002217240001843X
关键词:
摘要: For the present it may safely be stated that on growing grass, bovine B. tuberculosis remain alive and virulent, for a period of at least 49 days in summer, south England. Simultaneously with experiments described above, feeding experiment guinea-pigs has been carried out, to discover whether bacilli, proved infective these animals by inoculation are, after exposure grass varying times, capable setting up infection alimentary route. this purpose number colonies dozen each is being fed increasing intervals time infection. These experiments, which are progress, hoped preliminary calves similarly infected pasture.