Assertion: adenosine's receptor | /r/AtLocation | low levels of expression
Facets:
Source sentences:
text: In the CNS, A 1 receptors are widely distributed in the cortex, hippocampus, and cerebellum, A 2A receptors are localized mainly in the striatum and olfactory bulb, while A 2B and A 3 receptors are found at low levels of expression.