Fig. 1From: A severe microsporidian disease in cultured Atlantic Bluefin Tuna (Thunnus thynnus)Glugea thunni in Thunnus thynnus from the Mediterranean Sea. a Specimen of T. thynnus infected by G. thunni with melanized and partially melanized cysts, including a detail of xenomas within the ceacal mass (scale bar 2.5 cm) b fresh smear with free microspores and parasitophorous vesicles with different number of microspores (scale bar 40 µm). c Detail of fresh smear with free short and large microspores and parasitophorous vesicles (scale bar 20 µm). White arrow—melanized cyst; white arrowhead—cysts with melanized spots; black arrows—abnormal microspores; black arrowheads—parasitophorous vesiclesBack to article page