to determine what factor ( s ) promotes cell division in this region of the eye long after it ceases at the back of the eye ( near the optic nerve ) , we have transplanted small groups of eye cells from pigmented donor embryos into the eyes of albino hosts , transposing cells from the mitotically quiescent back of the eye to the germinal zone and vice versa .
C0007590
cell division
C0007634
cells