As he expected, only brain extracts were active. (newscientist.com)
In all these diseases an important diagnostic feature is the presence of proteinaceous fibrils seen in brain extracts in the electron microscope. (newscientist.com)
A decade ago, these similarities prompted neuroscientist Mathias Jucker at the University of Tübingen in Germany to test whether injecting brain extracts containing misfolded amyloid - β into mice could seed an abnormal build - up of amyloid in the animals» brains. (scientificamerican.com)