Fig. 3From: A severe microsporidian disease in cultured Atlantic Bluefin Tuna (Thunnus thynnus)Transmission electron micrographs of xenomas of Glugea thunni from the caecal mass of Thunnus thynnus from the Mediterranean Sea. a Mature spores and degenerative host cells. b and c Spores under development. MS—mature spores; IS—immature spores; Sb—Early sporoblast; HN, Host cell nucleus; black arrowhead—parasitophorous vacuole membrane (scale bars 2 µm)Back to article page