title: Karyomegaly in Baryancistrus sp. (Loricaridae) from Amazonian Brazil.
abstract: Vesicular karyomegaly of the liver hepatocytes is described from Baryancistrus sp. (Loricaridae), in 3 out of 7 fish, collected from Rio Xingu in central Amazonian (neutral water) Brazil and kept about 2 wk in a holding facility fed with acid water (pH 5.0 to 5.5). Altered cells also occurred in the gill epithelium. The vesicles in the liver were shown to contain a periodic acid-Schiff (PAS)-positive substance or residue.
authors.affiliation: Department of Animal Sciences, Faculty of Agriculture of the Hebrew University of Jerusalem, Rehovot, Israel. paperna@agri.huji.ac.il
authors.forename: I
authors.initials: I
authors.lastname: Paperna
authors.forename: D
authors.initials: D
authors.lastname: Di Cave
mesh_terms: D000818:Animals; D001938:Brazil; D002467:Cell Nucleus / Q000473:pathology; D005393:Fish Diseases / Q000473:pathology*; D005399:Fishes; D005880:Gills / Q000473:pathology / Q000648:ultrastructure; D022781:Hepatocytes / Q000473:pathology* / Q000648:ultrastructure; D006863:Hydrogen-Ion Concentration; D010503:Periodic Acid-Schiff Reaction