1. Post-Graduate & Research Department of Biotechnology, St. Xavier’s College (Autonomous), Kolkata, India
2. 5th Year Integrated M. Sc. (5 year integrated) students, Post-Graduate & Research Department of Biotechnology, St. Xavier’s College (Autonomous), Kolkata, India
3. State-Aided College Teacher, Department of Microbiology, Sarsuna College (Affiliated to Calcutta University), Kolkata, India