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- 43. A 5-year-old boy has orbital pain and proptosis of the right eye. A photomicrograph of orbital tissue obtained on biopsy is shown. A stain for desmin is positive. Which of the following is the most likely diagnosis? A) Chondrosarcoma B) Fibrosarcoma C) Leiomyosarcoma D) Liposarcoma E) Malignant fibrous histiocytoma F) Malignant giant cell tumor G) Malignant lymphoma H) Osteosarcoma 1) Rhabdomyosarcoma J) SynoviosarcomaDescribe: a.) the mechanism of action of PF-07321332, the active compound found in the antiviral drug Paxlovid; b.) the viral target that it inhibits; and c.) the product formed. Use schemes where appropriate to support your answer. H H" H NH NH PF-07321332 FA.) Why are some medicines marked with a red triangle? B.) How to store medicines and how to dispose of them?
- which of the following antibiotics are batericidal? a) polymyxin b b) rifamycins c) tetracyclines d) sulfonamides e) erythromycin54. Following are used to treat DIC except A) PlateletsB) Packed cellsC) WBCD) cryoprecipitatesThe Sabin vaccine contains ______. A) a mixture of bacteria and live, attenuated poliovirus B) a piece of the poliovirus C) inactivated poliovirus D) live, unattended poliovirus
- 65. Destruction of the group of cells identified by the arrows in the photomicrograph shown is most likely to result in which of the following conditions? A) Anemia B) Cirrhosis C) Impotence D) Type 1 diabetes mellitus E) UlcerA suspected pathogen is observed from the blood of a diseased mouse. An investigation of the other mice in the area indicates that it is not present in healthy mice. With Koch's postulates in mind, what is the next step to determine whether or not this suspected pathogen is the cause of disease in the mouse? a) Grow the suspected pathogen in a pure culture Ob) Re-isolate the suspected pathogen and show that it is the same as the original pathogen c) Inoculate a healthy mouse with the suspected pathogen O d) Determine whether the organism in the pure culture is the same one as in the original sample54. The hyperviscosity syndrome associated with Waldenström macroglobulinemia is caused by which of the following? A) Aggregation of blast cells B) Erythrocytosis C) Increased serum concentration of calcium D) Increased serum concentration of IgM E) Rouleaux formation
- a recent communicable disease outbreak, except COVID-19. For the selected communicable disease outbreak, the following MUST be clearly identified: a) a description of yellow fever b) who was affected c) location of the outbreak d) the When (time) e) Why the outbreak occurred (fully described what was the cause). f) Provide relevant data and appropriate references.52. During the development of a new vaccine, an investigator generates a mutant strain of bacteria that does not adhere to mucosal epithelia, Mutations in which of the following bacterial components or structures would most likely prevent bacterial adhesion? htba OA) Capsules OB) Flagella OC) Lipopolysaccharide OD) Lipoteichoic acid OE) Pili OF) Porins OG) Siderophores OH) Spores in 1thou (moon) PiliWhich of the following statements about antibiotics is TRUE? a) Antibiotics are used to disinfect bench tops.b) An antibiotic is a type of antiseptic.c) Some antibiotics inhibit the growth of a pathogen and do not kill it.d) Some antibiotics work by binding the 40S ribosomal subunit.e) Antibiotics are used to treat fungal infections.