Biochemistry 114 Nucleic acids 85 Enzymes 70 Nucleic Acid 69 Proteins 64 Amino acids 46 Current Science (Journal) 45 Molecular biology 42 Lipids 39 Proteins-- Peptides-- Amino acids-- Hemoglobin 37 Nucleic Acids 35 DNA 33 Biochemica et Biophysica Acta (Journal) 31 methods 30 Biology 29 Cytology 29 Chemistry 28 History 26 soil acidity 26 Carbohydrates 25 Synthesis 25 Enzymology 24 Acid rain 22 Metabolism-- Nucleic acids 22 Dissertations, Academic (Ph.D) 21 Biotechnology 19 Molecular Biology 19 Amino acid sequence 18 DNA (Deoxyribo Nucleic Acid) 18 Metabolism 18