Table 3. Distribution of hybridization signals over nuclear cores or loop halos.

Probe	Number of nuclei	% of signals over core	% of signals over halo
AR 8	100	93	7
Loop 7	100	19	81
AR 7	120	89	11
AR 5	90	91	9
AR 4	100	94	6
Loop 3	140	23	77
AR 3	100	91	9
Loop 1	120	20	80

Nuclear halos were hybridized with the probes shown in Table 2 which detect loops or ARs as mapped in Figure 1. Only nuclei showing a hybridization signal (∼65% of the total) were scored.