Enzymes 596 Biochemistry 228 Enzymology 95 Biology 75 Biotechnology 69 enzymes 63 Proteins 59 History 47 X-ray crystallography 42 Biography 34 Lipids 33 Physics 32 Enzymes-- Coenzymes-- Cofactors-- Enzymology 31 Metabolism 31 metabolism 31 X-rays 28 Criticism and interpretation 26 Religion 23 Dissertations, Academic (Ph.D) 22 History and criticism 22 Bio chemistry 21 Carbohydrates 21 Literature 20 Nucleic acids 20 Synthesis 20 Enzyme 19 Genetic engineering 19 Motion pictures 19 Physiology 19 Enzyme kinetics 18