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Figure 3 Immunohistochemical detection of heat shock protein (Hsp) 70 in rat carotid arteries. Frozen sections of injured (A) and noninjured (B) carotid arteries were frozen and embedded in OCT. Immunohistochemical detection of expressed Hsp70 was carried out employing mouse anti-Hsp70 polyclonal antibody as a primary antibody. The arrow indicates neointima-media border.