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FIG 2. Rabbit aneurysm embolized with platinum coils.
A, Gross photograph showing a thin, translucent membranous tissue at the neck, through which coils loops are visible.
B, Section of the rabbit aneurysm stained with H&E (magnification 60x). The photomicrograph shows loose, hypocellular, amorphous tissue in the dome.
C, Section stained with H&E (magnification 60x). The photomicrograph illustrates the thin layer of tissue along the entire neck.
D, Masson trichrome stain (magnification 60x). The photomicrograph reveals no collagen deposition within the aneurysm dome’s loose tissue.
E, Immunofluorescent double stain with antibodies for SMA (red) and vimentin (green) (magnification 20x; oil). This photomicrograph reveals that the scattered cells within the aneurysm dome are positive for vimentin and negative for SMA. In addition, the cells lining the thin neovessels were shown to be positive for SMA and vimentin.
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