German Roger Jean Gautheret Cited by user Martinl on 16 Nov 2014 Roger Jean Gautheret (* 29. März 1910 in Paris; † 28. April 1997 ebenda) war ein französischer Botaniker und Pionier in der Erforschung von in vitro Gewebekulturen.
English Callus (cell biology) Cited by user Blahnais on 25 Apr 2011 Plant callus (plural calluses or calli) is a mass of unorganized parenchyma cells derived from plant tissue (explants) for use in biological research and biotechnology.