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Fig. 6. Secondary lens fiber cell apoptosis. DAPI labeling fluorescence
(A,B), TUNEL reaction fluorescence (C,D), merge of both
(E,F) and merge of DAPI and TUNEL with bright field (G,H) of
lens sections from 7-week-old wild-type (A,C,E,G,I) and 7.5-week-old DKO
(B,D,F,H,J) mice. Lenses on all images are oriented such that the upper right
corner points towards the bow region and the lower left corner points towards
the lens nucleus. In negative controls (I,J), terminal transferase was
omitted from the TUNEL reaction. Arrows in E,F indicate nuclei double labeled
with DAPI and TUNEL. Arrowheads in E indicate the area of secondary fiber cell
maturation. Scale bar: 25 µm.