The present inventors carried out immunization using renal/urinary calculus-derived calcified globules or carotid artery-derived arteriosclerotic plaques, and then obtained antibodies specific to calcified globules (NLO) via screening with NLO. The present inventors demonstrated that the antibodies reacted specifically to arteriosclerotic lesions (calcified lesions) and visualized arteriosclerotic plaques (in particular, calcified lesions) by using fluorescently labeled antibodies. Accordingly, the present inventors completed the present invention.
