Stentor-polymorphus. Si noti la classica forma a perla di rosario del suo nucleo.
QUI' TROVI ANCHE 3 VIDEO DELLO STESSO MICRORGANISMO:

http://www.youtube.com/watch?v=V06CbivRgaU&feature=share&list=UUOJVW67fl-mirN1Qb71CJEg
http://www.youtube.com/watch?v=dw1ZnRJsiZQ&feature=share&list=UUOJVW67fl-mirN1Qb71CJEg
http://www.youtube.com/watch?v=nIlFc5QPr8g&feature=share&list=UUOJVW67fl-mirN1Qb71CJEg