| How to cite this article:
K.C. Shivanandappa, S. Jagannathan, S. Lokesh, R. Vijayakumar and K.R. Mani, 2015. Effect of Impeller Number and Position on Growth Yield and Virulence of Bordetella pertussis Strain 509 During Large Scale Batch Fermentor Cultivation. Asian Journal of Biotechnology, 7: 60-70.