each line had different rearrangements involving chromosome 7 that resulted in three copies of most of the short arm being present in both cell lines , except for high passages of 17b , in which one structurally normal 7 was replaced by a dicentric isochromosome , dic ( 7 ) ( q11.22 ) , resulting in four copies of 7p .
C0008670
chromosome 7
C1521610
7p