| 435 / | HD | CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY |
| 183 | DF | ENZYME (E.G., LIGASES (6. ), ETC.), PROENZYME; COMPOSITIONS THEREOF; PROCESS FOR PREPARING, ACTIVATING, INHIBITING, SEPARATING, OR PURIFYING ENZYMES {11} |
| 195 | DF | .~ Hydrolase (3. ) {4} |
| 212 | DF | .~.~ Acting on peptide bond (e.g., thromboplastin, leucine amino-peptidase, etc., (3.4)) {7} |
| 218 | | .~.~.~ Elastase |