nitrogenous bases English Nitrogenous base - Wikipedia, the free encyclopedia nitrogen-containing nitrogen-containing nitrogenous base English nitrogenous bases Nitrogenous base - Wikipedia, the free encyclopedia English Nitrogenous base - Wikipedia, the free encyclopedia English https://en.wikipedia.org/wiki/Nitrogenous_base bases Nitrogenous base - Wikipedia, the free encyclopedia English Nitrogenous base nitrogenous bases English nitrogen-containing Nitrogenous base – Wikipedia, the free encyclopedia Nitrogenous base - Wikipedia, the free encyclopedia English English nitrogen-containing bases nitrogen-containing https://en.wikipedia. org/wiki/ Nitrogenous_base https://en.wikipedia. org/wiki/ Nitrogenous_base Nitrogenous base English