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Light micrographs showing assessed apoptotic cells using the TUNEL assay. Apoptotic cells appear distinct deep pigmented (arrow) in the outer nuclear layer and inner nuclear layer in each group. Note the high amount of apoptosis in slide f, the 600-ng/μL IVC group. Apoptotic cell counts of slides a,b,c,d,e,g and h have no statistical difference within each other. Original magnification ×100, oil immersion
