the study of arrhenius plots for acetylcholinesterase ( ache ) and butyrylcholinesterase ( buche ) activity from the rat brain and spinal cord revealed that in contrast to ache , which exhibited biphasic arrhenius plots with a distinct break ( transition temperature ) at about 16-18 degrees c , buche showed no evidence of discontinuity and a higher activation energy in the physiological range of temperature .
C0001044
ache
C0008429
buche