adenine molecular structure 3d, flat model, purine nucleobase, structural chemical formula view from a microscope

adenine purine nucleobase nucleobases nucleic acids molecule molecular structure chemical formula model c5h5n5 atom chemistry rna laboratory science nucleotide acid biology dna information research base illustration deoxyribonucleic footed code composition gene medical medicine test biochemistry complementary genome organism pair skeletal compound element vitamin icon line flat structural view from microscope microscope