Figure 4.

Lipofuscin and lipofuscin-like structures are increased in female aged C57BL/6J lacrimal gland. Paraffin-embedded lacrimal gland histologic sections were fixed in formalin and routinely processed in paraffin and stained with H&E. The same area was photographed with a color camera or with a fluorescent camera with the indicated filters. Autofluorescence in ducts is visible with the 488 and 594 filters, while distinct structures are autofluorescent with the 594 and CY5 filters. (bar=25 µm).

8W, 8 weeks of age; 24M, 24 months of age.