Assertion: centromere's region | /r/CapableOf | localize the four spei fragments
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Source sentences:
text: (B) Southern hybridization of SpeI partially digested γ1230 with two probes located close to either end of this region, which localized the four SpeI fragments in the order of (from left to right) 70, 135, 235, and 35 kb (the 70 kb fragment contains the euchromatin/heterochromatin junction because it also hybridizes to the 6.1XR2.5 probe in complete digests).