1. Institute of Animal Health and Veterinary Biologicals (R&T), 37-Belgachia Rd, Kolkata-700 037, India.
2. Department of Pharmacology, University College of Medicine, Calcutta University, 244-B A. J. C. Bose Rd, Kolkata-20, India.
3. Department of Pharmacology and Toxicology, West Bengal University of Animal and Fishery Sciences, 68, K. B. Sarani, Kolkata-700 037, India.
4. Chittaranjan National Cancer Research Institute, Kolkata, India.