Figure 3.

Histology from the CD24⁺ injection site (a; ×20 objective magnification) revealed only normal mouse tissue, whereas the CD24^−/low injection site (b; ×40 objective magnification) contained malignant cells. (c) A representative tumor in a mouse at the CD44⁺CD24^−/lowLineage⁻ injection site, but not at the CD44⁺CD24⁺Lineage⁻ injection site. T3 cells were stained with Papanicolaou stain and examined microscopically (×100 objective). Both the nontumorigenic (d) and tumorigenic (e) populations contained cells with a neoplastic appearance, with large nuclei and prominent nucleoli.