Polymerase chain reaction performed with DNA isolated from somatic human-rodent cell hybrids containing defined human chromosomes as template gave a human-specific signal which mapped the NDUFS2 and NDUFS3 subunits to chromosomes 1 and 11 , respectively .
O O O O O O O O O B-OrganismTaxon O O O O B-OrganismTaxon O O O O O B-OrganismTaxon O O O O B-GeneOrGeneProduct O B-GeneOrGeneProduct O O O O O O O O O