Bokun A O
Probl Tuberk. 1989(1):51-4.
The studies showed that during epizootic infectious processes of tuberculosis in cattle and due to multiple subcultivation and long-term storage on artificial nutrient media tubercle bacilli changed their properties and biological activity which was evident first of all from their lower virulence and sensitizing capacity.
研究表明，在牛结核病的流行感染过程中，由于多次传代培养以及在人工营养培养基上长期保存，结核杆菌的特性和生物活性发生了变化，这首先表现为其毒力和致敏能力降低。
