Buprenorphine, the active ingredient in both Suboxone and Subutex is less likely to cause addiction, and has a calmer withdrawal period. More clinical studies have been done on the effects of methadone during pregnancy than the effects of buprenorphine during pregnancy.
You won't believe these 10 facts about people. Gray matter or grey matter is a type of neural tissue which is found in the brain and spinal cord. It is named after its distinctive brownish-gray color, in contrast with white matter, another type of neural tissue which appears white because it is coated in myelin sheathes.
The pink areas in Figure 2 show the grey matter of the cerebral cortex on the outer surface of the cerebral hemispheres. The grey areas show grey matter inside the hemispheres and in the front end of the brain stem.