Alexander Humboldt FoundationFellowship for experienced researchers (Germany) International Climate protection Fellowships (Germany) American Cancer SocietyInternational Fellowships for Beginning Investigators (ACSBI, USA) Commonwealth Secretariat, U.K., administered by UGCCommonwealth Academic Staff Fellowship (UK) DBT/NIHKhorana- Nirenberg Scholar Program (India/NIH) IBM - IUSSTFIBM - IUSSTF Visiting Fellowships in Nanotechnology(Thomas J. Watson Research Laboratory New York) Indo-US Science and Technology ForumASM-IUSSTF Indo-US Professorship in Microbiology Indo-US Science and Technology Forum fellowships (USA) Union for international cancer control (UICC)Yamagiwa-Yoshida Memorial international study grants(any country overseas) US-India Educational FoundationFulbright-Nehru Academic and Professional Excellence Fellowships