| 435 / | HD | CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY |
| 4 | DF | MEASURING OR TESTING PROCESS INVOLVING ENZYMES OR MICRO-ORGANISMS; COMPOSITION OR TEST STRIP THEREFORE; PROCESSES OF FORMING SUCH COMPOSITION OR TEST STRIP {15} |
| 7.1 | DF | .~ Involving antigen-antibody binding, specific binding protein assay or specific ligand-receptor binding assay {9} |
| 7.9 | DF | .~.~ Assay in which an enzyme present is a label {2} |
| 7.92 | DF | .~.~.~ Heterogeneous or solid phase assay system (e.g., ELISA, etc.) {3} |
| 7.93 | | .~.~.~.~ Competitive assay |