Table 2.

Interphase location of XEn arrays

Clone (chromosomal location)	XEn nonnucleolar
4A (13p)	17% (n = 54)
4E (21p or 22p)	38% (n = 37)
5A (13p)	5% (n = 63)
5D (13p)	4% (n = 48)
3D (10q)	83% (n = 35)
5B (10p)	71% (n = 34)
5C (7q)	84% (n = 44)
5E (7q)	83% (n = 54)

Combined immuno-FISH experiments were performed on XEn array containing cell lines. The percentage of cells in which the XEn array (visualized with a spectrum red probe) and nucleoli (visualized with UBF, RPA43, or fibrillarin antibodies) were clearly separable was calculated. The number of cells analyzed (n) for each clone is also shown.