Fig. 4
From: Evaluation of aortic changes in elderly people autopsied with acquired immunodeficiency syndrome
a Histological section stained with picrosirius seen under common light, 1250x final increase of an elderly patient with Aids. b Histological section stained with picrosirius seen under polarized light, 1250x final increase of an elderly patient with AIDS, evidencing a greater amount of birefringent collagen fibers. c Histological section stained with picrosirius seen under common light, 1250x final increase of an elderly patient without AIDS. d Histological section stained with picrosirius seen under polarized light, 1250x final increase of an elderly patient without AIDS, evidencing a smaller amount of birefringent collagen fibers