noun. A nucleoside, C₁₀H₁₃N₅O₄, composed of adenine linked to ribose, that is a structural component of nucleic acids and the major molecular component of ADP, AMP, and ATP.

noun. A nucleoside derived from adenine and ribose, found in striated muscle tissue.

noun. An instance of adenosine.

noun. (biochemistry) a nucleoside that is a structural component of nucleic acids; it is present in all living cells in a combined form as a constituent of DNA and RNA and ADP and ATP and AMP

""Bubble boy" disease: severe combined immunodeficiency (SCID) due to a lack of an enzyme called adenosine deaminase."

nucleoside  

5-ht2a  adenine  cell-surface  chemokine  cytidine