A mitosome (also called a crypton in early literature) is a mitochondrion-related organelle (MRO) found in a variety of parasitic unicellular eukaryotes, such as members of the supergroup Excavata.
An organelle similar to mitochondria, known either as a mitosome or a crypton, is found in various parasitic single-celled eukaryotes belonging to the Excavata supergroup.