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. This file contains a letter from May 1981. This file comprises a single letter authored by MK Tiwari, a Scientist at ISRO. The letter pertains to the third meeting of the Advisory Committee on Space Sciences (ADCOS), which occurred on 16 April, 1981, at the Indian Institute of Astrophysics. The letter also has an enclosure titled 'Minutes of the Third Meeting of the Advisory Committee for Space Sciences Held at the Indian Institute of Astrophysics, Bangalore on April 16, 1981', which is retained as found.