Чотири форми найпростішого Blastocystis spp. („Four common forms of Blastocystis hominis Valzn” by Valentia Lim Valzn – Own work. Licensed under CC BY-SA 3.0 via Wikimedia Commons – https://commons.wikimedia.org/wiki/File:Four_common_forms_of_Blastocystis_hominis_Valzn.jpg#/media/File:Four_common_forms_of_Blastocystis_hominis_Valzn.jpg)