41. Examples of nucleosides include cytidine, uridine, adenosine, guanosine, thymidine and inosine. 42. "' Nucleoside phosphoramidites "'are derivatives of natural or synthetic nucleosides. 43. "' Nucleoside phosphoramidites "'are derivatives of natural or synthetic nucleosides . 44. The nucleoside triphosphate ( NTP ) involved in the reaction varies from species to species. 45. This enzyme is also called "'nucleoside -triphosphate pyrophosphatase " '. 46. This enzyme is also called "'adenylate-nucleoside phosphotransferase " '. 47. The nucleoside phosphonate adefovir is a MRP2 inhibitor that has been linked to kidney disease. 48. "' Xanthosine "'is a nucleoside derived from xanthine and ribose. 49. Are nucleosides different colors than nucleotides? 50. Viread is a member of the class of antiretroviral drugs known as nucleoside reverse transcriptase inhibitors.