435 / | HD | CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY |
41 | DF | MICRO-ORGANISM, TISSUE CELL CULTURE OR ENZYME USING PROCESS TO SYNTHESIZE A DESIRED CHEMICAL COMPOUND OR COMPOSITION {26} |
71.1 | DF | .~ Using a micro-organism to make a protein or polypeptide {1} |
71.2 | DF | .~.~ Procaryotic micro-organism {1} |
71.3 | .~.~.~ Antibiotic or toxin |