from our results on blood cells , we are now hypothesizing that in teat tissue prejunctional and extra junctional alpha 2- and beta 2-adrenoceptors might have been identified together , whereas alpha 2- and beta 2-adrenoceptors identified on blood platelets and lymphocytes , respectively , are reflecting by preference extra junctional adrenoceptors are activated primarily by circulating epinephrine .
C0001643
beta 2-adrenoceptors
C0034783
adrenoceptors