Microbiological water quality and gill histopathology of fish from fish farming in Itapecuru-Mirim County, Maranhão State - doi: 10.4025/actascibiolsci.v34i2.8460. Acta Sci. Biol. Sci. 2011;34(2):199-205. doi:10.4025/actascibiolsci.v34i2.8460