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КРОК / KROK
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Autopsy of the body of a 50-year-old man shows the following: the right lung is moderately dense in all segments, the tissue on section is airless, fine-grained, and dry. The visceral pleura has gray-brown fibrin deposits. What disease can be characterized by these pathological changes?
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Gluconeogenesis reactions use phosphoenolpyruvate formed from oxaloacetate. Oxaloacetate is synthesized by pyruvate carboxylase in mitochondria. What shuttle system transports this metabolite into the cytoplasm?
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To determine toxigenicity of diphtheria causative agents obtained from patients, the cultures were inoculated in a Petri dish with nutrient agar, bilaterally to a strip of filter paper spotted with antidiphtheric antitoxic serum and situated in the center of the Petri dish. After incubation of the inoculated cultures in the agar, strip-like areas of medium turbidity formed between some of the cultures and the filter paper. What immunological test was conducted?
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A patient has gradually developed a skin plaque on his face. In the center of this plaque there are necrotic patch and an ulcer. Histopathological analysis of the biopsy material reveals proliferation of atypical epithelial cells with large number of pathologic mitoses. What is the most likely diagnosis?
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A man suffers from acne and inflammatory changes in the skin of his face. Microscopy of a material obtained from the lesion foci reveals living elongated creatures of the phylum Arthropoda type with 4 pairs of reduced limbs. What is the preliminary diagnosis?
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A microslide shows an organ of cardiovascular system. One of its layers consists of anastomosing fibers. These fibers are made of cells connected by intercalated discs. What organ of cardiovascular system is it?
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A tired driver took a rest in the car with its engine running. As a result, he developed carbon monoxide poisoning. What compound formed in his blood, leading to severe consequences?
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A 28-year-old woman has seropurulent conjunctivitis and complains of painful urination. A conjunctival scrape was obtained for analysis. Microscopy shows inclusions in the cytoplasm of the epithelial cells. Inoculation of the pathologic material onto nutrient media produced no growth. However, inoculation of chicken embryos by the yolk sac route allowed obtaining the culture of the causative agent. What microorganism is the most likely causative agent?
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Examination of a man detects skin calcification, Raynaud syndrome, an esophageal motility disorder, sclerodactyly, and telangiectasia. These changes are called CREST syndrome and are characteristic of the following disease:
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Blood of a man, who 3 days ago had an acute blood loss, was studied and its leukocyte composition was determined to be as follows: leukocytes - 12·10^9/L, basophils - 0 %, eosinophils - 3 %, monocytes - 0 %, juvenile - 3 %, band neutrophils - 12 %, segmented neutrophils - 62%, lymphocytes - 16%, myelocytes - 4%. What change in the blood leukocyte composition takes place in this case?
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