Ключевые слова: 6aminopurine, 9hpurin6amine, acid, adenine, atom, atomic, atoms, b4, background, base, carbon, chemical, chemistry, composition, compound, daunorubicin, dna, drawing, flat, formula, gene, genome, hydrogen, icon, illustration, line, medicine, molecular, molecule, nitrogen, nucleic, nucleobase, nucleoside, nucleotide, oxygen, phosphate, purine, pyrimidine, ribose, rna, science, skeletal, structure, triphosphate, vitamin,