PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2555195-5 1989 When the calcium channel-blocking drugs, either verapamil or diltiazem, were withdrawn or when exogenous Ca2+ was added to the Ca2+-free medium, EBV-induced B cell activation was noted, demonstrating the reversibility of the inhibition. Verapamil 48-57 B cell linker Homo sapiens 157-174