Fig. 6

Representative photomicrograph of Nile tilapia liver. The fish were fed with the control diet or diets containing N. oculata at 5% or 10% for 7 weeks. A Control liver shows normal histological appearance of hepatopancrease (hp) with vacuolated hepatocyte (v). B Liver of tilapia fed on N. oculata at 5% shows minimal hepatic vacuolation (v). C, D Liver of tilapia fed on N. oculata at 10% shows diffuse moderate to severe hepatic vacuolation (v). H&E, 400X