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КРОК / KROK
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To create a vaccine for hepatitis B prevention the gene responsible for НВsAg production was integrated into the genome of vaccinia virus. What type of vaccine is obtained in this way?
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Microcrystalloscopy reaction for detecting potassium ions is the following one:
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What compound will react with propane under the given conditions?
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Analysis of a sedative herbal tea detects yellow-green infructescences (microstrobiles) formed by bract scales with a tile-like arrangement and small nut-like fruits. What plant can be characterized by such features?
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A child had been administered antidiphtheric serum. What resistance was formed in the child?
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Heparin is a potent natural anticoagulant, synthesized in mast cells. What is the chemical nature of this compound?
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Smears prepared from the cerebrospinal fluid sediment and stained using the Gram technique are studied in diagnostics of meningitis. What finding confirms the diagnosis of meningococcal infection?
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Rapid analysis of benzoate ions by means of Pharmacopoeia reaction with iron(III) chloride produces:
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The absorption zone of the primary anatomical root cortex mainly consists of multi-layered, live, loose parenchyma with starch granules. What tissue is described above?
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Microscopy of a leaf of a heliophyte plant detects several dense layers of elongated chlorophyll-containing cells that are located under the epidermis. These cells are oriented perpendicular to the surface of the leaf. What type of parenchyma is it?
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