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} |
69.1 | DF | .~ Recombinant DNA technique included in method of making a protein or polypeptide {7} |
69.5 | DF | .~.~ Lymphokines or monokines {2} |
69.51 | .~.~.~ Interferons |