Table 2. Fraction of Progenitor Cells Expressing sFRP2 and FGF15 Decreased as Development Proceeded.

Retinal explants were labeled with ³H-thymidine for 1 h, and then disociated and placed on slides. ISH was performed and the fraction of cells expressing sFRP2 and FGF15 is indicated, along with the fraction of cells labeled with ³H-thymidine, and the fraction of ³H-thymidine-positive cells that were labeled with probe