Salmon gill affected by amoebic gill disease (AGD). The surface of the gill lamellae is covered by amoebae and exfoliating cells. AGD is caused by the ectoparasite Paramoeba perurans and affects several cultured marine fish species worldwide. Coloured scanning electron micrograph (SEM), magnified x930 when printed at 10cm wide.
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small: 531 x 664 Pixels, medium: 917 x 1148 Pixels, large: 2216 x 2773 Pixels,