Assertion: hair follicle's cell | /r/CapableOf | remain as single bulge cell
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Source sentences:
text: In contrast, we found that soon after labeling at the telogen to anagen transition, the majority of labeled cells did not follow such simultaneous self-renewal and differentiation: the labeled cells did not divide, and instead, either remained as a single bulge cell or migrated into the differentiating hair germ where they began divisions (Zhang et al., 2009).