%0 Journal Article %T Distribution of rRNA genes in breeds of domestic pig studied by non-radioactive in situ hybridization and selective silver-staining %A Mellink CHM %A Bosma AA %A de Haan NA %A Wiegant J %J Genetics Selection Evolution %D 1991 %I BioMed Central %R 10.1186/1297-9686-23-s1-s168 %U http://www.gsejournal.org/content/23/S1/S168