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Figure 2 Arterial segment with atheromatous core with heavy staining of picro Sirius red within the cap confirmed with polarized light microscopy (A and C), and absent staining for CD68 in the cap and moderate CD68 staining in the shoulder and heavy CD68 staining at the base of the plaque (E) (asterick). Arterial segment with atheromatous core and thin/local absent picro Sirius red staining of the cap confirmed by polarized light microscopy (B and D). CD68 staining was heavily positive for cap and shoulder (F).
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