| Title : Pharmacological observations on the cholinesterase activity of the leech central nervous system - |
| Author(s) : Nistri A , Cammelli E , de Bellis AM |
| Ref : Comparative Biochemistry & Physiology C , 1 :203 , 1978 |
| PubMedID: 30578 |
| Title : Effects of morphine on brain and spinal acetylcholine levels and nociceptive threshold in the frog - |
| Author(s) : Nistri A , Pepeu G , Cammelli E , Spina L , de Bellis AM |
| Ref : Brain Research , 80 :199 , 1974 |
| PubMedID: 4547406 |