Collaborative research with institutions and individual researchers is carried out on different levels. In terms of joint publications, the Medical Faculty of Heidelberg is spearheading collaboration with Indian colleagues. A recent analysis of Indo-German research collaboration released by the German Research Foundation (DFG) has shown that in the field of Medical Sciences, Heidelberg is the number one collaborator with Indian researchers. Other main actors in research collaboration are the South Asia Institute, which entertains 19 MoUs with Indian Universities and Research Institutions, the Cluster "Asia and Europe", the department of Theoretical Chemistry, which is awaiting approval of a joint application with the Central University of Hyderabad for a DFG Special Priority Programme, and the department of Physical Chemistry, which has entertained collaboration with Baba Atomic Research Centre for the past twenty years. A new field for extensive cooperation is emerging in systems biology, where contacts have been established with leading researchers from Tata Institute of Fundamental Research, the National Centre for Cell Sciences and the Institute of Science Education and Research, both in Pune, the National Centre for Cellular and Molecular Biology in Hyderabad, the departments of Life Sciences in JNU and the Central University of Hyderabad, and the School of Biological Sciences at IIT Delhi.