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hematology × 308human-biology × 61
red-blood-cell × 45
blood-circulation × 32
physiology × 28
immunology × 24
cell-biology × 20
cardiology × 17
biochemistry × 16
blood-group × 16
pathology × 14
medicine × 14
zoology × 13
human-physiology × 13
genetics × 9
circulatory-system × 9
antibody × 8
cancer × 7
nutrition × 7
evolution × 6
molecular-biology × 6
pharmacology × 6
stem-cells × 6
blood-pressure × 6
homework × 5