Biochemistry 113 Nucleic acids 85 Enzymes 70 Nucleic Acid 69 Proteins 62 Amino acids 46 Molecular biology 41 Lipids 39 Proteins-- Peptides-- Amino acids-- Hemoglobin 37 Nucleic Acids 35 DNA 33 Biochemica et Biophysica Acta (Journal) 31 Soil Science and Agricultural Chemistry 30 Agronomy 27 Chemistry 27 Biology 26 soil acidity 26 Carbohydrates 25 Cytology 25 Synthesis 25 Enzymology 24 Acid rain 22 Metabolism-- Nucleic acids 22 Plant Biotechnology 22 methods 21 Biotechnology 20 Dissertations, Academic (Ph.D) 20 Molecular Biology 19 Amino acid sequence 18 DNA (Deoxyribo Nucleic Acid) 18