STS043-03-001 (2-11 Aug 1991) --- Astronaut Shannon W. Lucid, STS-43 mission specialist, is pictured with a sample from the Bio-serve Instrumentation Technology Associates Materials Dispersion Apparatus (BIMDA). BIMDA is designed to obtain data on scientific methods and commercial potential for growing large high quality protein crystals in microgravity. The experimental focus is on both synthetic and natural biological processes that provide the foundation of the assembly of large structures from macromolecules. In addition, cell processes and membrane (cell and artificial) processes are being evaluated. BIMDA experiments are stored and operated on the middeck in a refrigerator/incubator module (R/IM). During this flight, the R/IM maintains a constant internal temperature of 20 degrees Celsius. This experiment also flew on NASA?s STS-37 mission.