PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17330864-12 2007 These results indicate that at immature Schaffer collateral-CA1 synapses, activation of presynaptic calcium stores is not necessary for but contributes to nicotine-elicited increase of neurotransmitter release. Nicotine 155-163 carbonic anhydrase 1 Rattus norvegicus 60-63