histochemical investigations of acetyl- and butyrilcholinesterase ( ache and bche ) activity in the cortical plate and in some subcortical areas of the human brain have demonstrated that on the 8th week of the prenatal development of the greatest ache and bche activity is observed in the dorsal thalamus , epithalamus and in the ependymal layer of various cerebral parts , the forebrain including .
C0006104
brain
C0085140
forebrain