Viability of recovered cells by the exfoliation/enrichment strategy. The absence of blue staining in the colonic epithelial cells recovered after using exfoliation/enrichment indicates the cells recovered by this approach are viable. The yellow dots are the immunomagnetic beads (40×).
Mojica et al. BMC Clinical Pathology 2007 7:7 doi:10.1186/1472-6890-7-7