acetylcholinesterase ( ache ) and butyrylcholinesterase ( bche ) were assayed in the cerebrospinal fluid ( csf ) of subjects with neurodegenerative diseases ( dementing and non-dementing , with and without known cholinergic lesions ) , to determine whether csf ache is a valid marker of central cholinergic activity .
C0008429
butyrylcholinesterase
C0001044
ache