EXTRAKTIONSVERFAHREN ZUR ENTFERNUNG VON UNER- WUENSCHTEN BESTANDTEILEN AUS ALS REAGENS VER- WENDBAREN MIKROORGANISMEN

摘要

There is provided a process for extraction of a microorganism, which comprises treating said microorganism with a 4 to 8 molar aqueous solution of a guanidine salt, subsequently washing it to liberate it from the salt and thus obtaining it and diagnostic agents containing a microorganism so extracted.