WM STANLEY. “Needless to say, for a time there was great skepticism that the crystalline material could be tobacco mosaic, due chiefly to the old idea that viruses were living organisms. A wide variety of experimental approaches has been used to test the proposal that the crystalline ma-”
“terial represented tobacco mosaic virus. It was found that essentially all of the virus activity present in infectious juice could be isolated in the form of the crystalline material. The virus activity of this material was about 500 times that of the starting material.” (Nobel Lecture, December 12, 1946).
https://lnkd.in/eRJ7Biu