Table 3.

Association of SMN gems with the U2 gene locus is cell dependent

	Percent gems associated with U2 locus	Percent gems close to U2 locus
WI38	0 (0/42)a	4.8 (2/42)
HeLa	14.8 (12/81)	18.5 (15/81)

SMN gems do not associate with U2 gene loci in WI38 fibroblasts in which CBs are rare, whereas they are often associated with or very close to (less than ∼0.5 μm) CBs in HeLa cells. Approximately 54% of CBs are associated with U2 loci in these HeLa cells (Table 2). 

^a Number associated/number scored.