Figure 3. Age-dependent changes in the
percentage of side population (SP) cells in the lens epithelium. The
percentage of SP cells was measured at embryonic day 15 (E15), E17,
postnatal day 1 (PN1), PN3, PN5, PN7, PN14, 3 weeks of age (3W), 10W.
The percentage of SP cells decreased at PN3 in mice and was
approximately 0.05% in mice at 10W.