PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2585551-1 1989 The present study represents the first comprehensive investigation of the effect of huperzine A (HUP-A), a new cholinesterase inhibitor (ChEI) isolated from a Lycopodium species, upon acetylcholinesterase (AChE) activity, acetylcholine (ACh) levels and release, and cholinergic receptors in rat brain following acute i.m. huperzine A 84-95 acetylcholinesterase Rattus norvegicus 206-210