| 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} |
| 7.2 | DF | .~.~ Involving a micro-organism or cell membrane bound antigen or cell membrane bound receptor or cell membrane bound antibody or microbial lysate {4} |
| 7.21 | DF | .~.~.~ Animal cell {4} |
| 7.23 | | .~.~.~.~ Tumor cell or cancer cell |