Читать книгу Parasitology - Alan Gunn - Страница 58

This is a large group of anaerobic flagellate protozoa of uncertain composition and most probably derived from various ancestors (i.e., it is polyphyletic). They lack mitochondria although this is almost certainly a derived characteristic rather than them never having possessed them during their evolution. They have groups of four flagellae and/or basal bodies that are often arranged in association with their nucleus to a form a structure called the karyomastigont.