Table 1.

Chromosome numbers of individual cells of mouse cell lines without and with multidrug resistance genes

Cell line	mn*	n†	Chromosomes per cell
771, Mdr1a,b−/−	70	15	68, 68, 69, 70, 70, 70, 71, 71, 72, 74, 74, 75, 76, 76 + double minute chromosomes, 144
886, Mdr1a,b−/−	63	15	59, 61, 62, 63, 63, 63, 63, 63, 64, 65, 67, 72, 72, 115, 128
4B, Mdr1a,b−/− and Mrp1−/−	68–69	15	65, 67, 67, 68, 68, 68, 69, 69, 69, 70, 71, 71, 71, 73, 73
WT-2ac1	82	15	78, 78, 78, 80, 82, 82, 82, 82, 82, 82, 82, 83, 83, 84, 123
WT-12	113	10	106, 106, 108, 109, 110, 110, 112, 113, 113, 113

^*mn is the modal chromosome number. 

^† n is the number of metaphases analyzed.