title: Variable positions of nucleolus organizer regions in Bovidae.
mesh_terms: D000818:Animals; D002417:Cattle / Q000235:genetics*; D002466:Cell Nucleolus / Q000648:ultrastructure*; D002875:Chromosomes / Q000648:ultrastructure*; D006041:Goats; D007621:Karyotyping; D012756:Sheep; D013045:Species Specificity; D013194:Staining and Labeling