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Enzymes
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199
DNA
48
RNA
22
Escherichia coli
15
Yeasts
15
Adenosine Triphosphate
12
Genes
10
Genetics, Microbial
6
Bacteriophages
5
Genetics
5
Proteins
5
Neoplasms
4
Rheumatic Fever
4
Ribonucleases
4
Antibodies
3
Antigens
3
Galactose
3
Glucagon
3
Immunity
3
National Institutes of Health (U.S.)
3