The western biotech cluster is India’s leading cluster with 46percent share in the overall revenues of INR 14,199 crore. Maharashtra is the top contributor with 35.04 percent share of the total biotech revenues Maharashtra is base for top bioagri companies such as Monsanto, Mahyco and Ajeet Seeds Pune based Serum Institute of India (INR 850 crore contributed for about 13percent of Maharashtra biotech revenue and 6percent of overall India biotech industry revenue. Mumbai is ranked as the top Biotech city of India. Four of India’s top 10 services companies (CROs) are also based out of Maharashtra including the No 1 CRO in the Indian industry Quintiles India