M.tuberculosis (Mtb) takes about 12h to 18h to do a cell division. This partially explains why it takes so long to grow the bacteria for diagnosis (4-6 weeks). How can this impact treatment? Be precise
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M.tuberculosis (Mtb) takes about 12h to 18h to do a cell division. This partially explains why it takes so long to grow the bacteria for diagnosis (4-6 weeks). How can this impact treatment? Be precise
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- If the diagnostic tests reveal the presence of high numbers of staphylococci, discuss the probable conditions that are producing the given signs and symptoms. (See Clinical Signs and Symptoms of Infection.)Using the Koch's Postulates, support the findings that Mycobacterium tuberculosis is the causative agent of tuberculosis. Specifically, you have to provide brief narratives/pictures/proofs and sources that support the postulate listed below: The organism must be isolated from the newly infected animals and cultured again in the laboratory, after which it should be seen to be the same as the original organism.Different strains of Streptococcus pyogenes have different virulence factors, giving these microbes much versatility. Virulence factors include which of the following? Choose one or more: A.A capsule that, when thick, will help the organism avoid phagocytosis by macrophages B.A cell wall containing lipoteichoic acid, thought to facilitate adherence to pharyngeal epithelial cells C.Enzymes that lyse blood cells (streptolysins) D.The production of several endotoxins called streptococcal pyogenic endotoxins (SPEs)
- a.Explaination of how a bacteria must be present in all the cases of a disease. b.explanation how a bacteria should be isolated from the infected organism and can be grown in pure culture.Mycobacterium tuberculosis microbes are not easily killed by sunlight or drying. This is because this microbe forms spores as a protective mechanism. True FalsePlease explain, would the answer be C). This patient is at risk for infection because of his low white blood cell count. 64-year-old African American male visits his primary care physician with complaints of bone pain, fatigue, nausea, loss of appetite, and constipation. The patient has a history of good health and exercises regularly. However, his recent symptoms have started to interfere with his active lifestyle. After a physical examination, his physician orders laboratory analysis to identify what might be causing his symptoms. Based on the CBC results and your knowledge of the cellular components of the immune system, what is an immunological concern for this patient? A). This patient is at increased risk for bruising and bleeding because of his low platelet count. B). The patient’s fatigue is caused by the lack of red blood cells (anemia). C). This patient is at risk for infection because of his low white blood cell count.
- Surgical instruments are sterilized by heating them and alcohol is used as disinfectant in cleansing the skin prior to and injection. Why are these methods effective against microorganism. Explain 2-3 sentencesOn the second day after the Mantoux reaction (the subcutaneous introduction of tuberculin - a protein-lipopolysaccharide component of mycobacterium tuberculosis), a child had an area of compaction and hyperemia in the injection zone with a diameter of 2.5 cm, that was surrounded by a swollen roller. A day later, a zone of necrosis was formed at the site of tuberculin administration. Questions: 6. Explain the mechanism of formation of compaction and hyperemia at the injection zone site. 7. What mediators are involved in the development of this type of TPP?a. Seropositivity means having a blood serum that tests positive. Explain why it may or may not develop at the same rate in all patients exposed to the same microbe. b. Would a high rate of false-positives decrease the sensitivity or specificity of a serological test?
- The predominance of squamous epithelial cells with few WBCs in a sputum sample would be adequate for diagnosis and culture. true falseWhy is C-reactive protein used as an index disease serverity in Kawasaki patientsWhich of the following sentences is CORRECT? A. P53 is an example of tumour activator gene B. leukotrienes are derived from arachidonic acid by cyclooxygenase C. effective bacteriocidal enzymes are contained in lysosome of the lymphocytes D. Gram stain is the most commonly used tissue stain for routine histological examination E. proteoglycans are located in ground substance of the ECM in connective tissues and basement membrane