A 26-year-old patient who died of decompensated chronic heart failure was diagnosed with rheumatic granulomatous myocarditis. Microscopically, granulomas are observed in the myocardium, which consist of macrophages with hyperchromic nuclei and light cytoplasm, in the center - a center of necrosis. The nature of necrosis in the center of the granulomas

+fibrinoid