title: Decreased formation of syncytial plaques in the XC-test with a double-cloned hypotetraploid XC-cell line and evidence of budding C-type particles in this and ordinary hypodiploid XC-cell lines.
mesh_terms: D000818:Animals; D002460:Cell Line; D002999:Clone Cells; D003582:Cytogenetics; D007621:Karyotyping; D009052:Leukemia Virus, Murine; D051379:Mice; D008807:Mice, Inbred BALB C; D008854:Microscopy, Electron; D009374:Neoplasms, Experimental; D011123:Polyploidy