Assertion: adenosine deaminase | /r/HasProperty | necessary
Facets:
Source sentences:
text: To differentiate ADA from other types of combined immunodeficiencies, it is necessary to assess the catalytic activity of the ADA enzyme.
text: It has also been proposed that ADA, in addition to adenosine breakdown, stimulates release of excitatory amino acids and is necessary to the coupling of A1 adenosine receptors and heterotrimeric G proteins.