702 / | HD | DATA PROCESSING: MEASURING, CALIBRATING, OR TESTING |
1 | DF | MEASUREMENT SYSTEM IN A SPECIFIC ENVIRONMENT {6} |
19 | .~ Biological or biochemical {2} | |
20 | DF | .~.~> Gene sequence determination |
21 | DF | .~.~> Cell count or shape or size analysis (e.g., blood cell) |