This file includes documents pertaining to the collaboration between the Centre for Cellular and Molecular Biology (CCMB) and the Indian Space Research Organisation (ISRO) for conducting life science experiments on NASA's Spacelab. The majority of the letters in this file pertain to the Advisory Committee on Space Sciences (ADCOS). This file contains letters and telegrams from November 1981. This file contains letters either written by or addressed to RR Daniel, Chairman, ADCOS, and Senior Professor of Physics at the Tata Institute of Fundamental Research. The last letter in this file, which is written by RR Daniel and is dated 27 November, 1981, also contains an enclosure titled 'Note Submitted to ADCOS for the Preparation of a Profile for Space Science for the Decade of the 1980s' which is retained as found. However, for better preservation, half of this enclosure is preserved in the file labelled 'Documents pertaining to CCMB's collaboration with ISRO to conduct life science experiments on NASA's Spacelab from 1981 - November - file 4'.