Fig. 3.

Phenotypic diversity in tumors arising from CD44⁺ Lin⁻ cells. CD44 staining pattern of live cancer cells from primary unpassaged tumor, tumor resulting from the implantation of CD44⁺Lin⁻ cells from the primary tumor (first passage), and tumor resulting from the implantation of CD44⁺Lin⁻ cells from the first passage tumor (second passage).