최신 ABMM 무료덤프 - American Society of Microbiology ABMM
A clinical microbiology laboratory is performing Gram staining on a sputum sample. After adding the crystal violet stain, a delay in the washing step with decolorizer (alcohol-acetone) would MOST likely result in:
정답: B
A patient with a history of solid organ transplantation develops diarrhea and abdominal cramps. Stool studies are negative for bacterial pathogens and C. difficile toxins. Colonoscopy reveals characteristic cytomegalic inclusion bodies in colonic biopsies. The MOST likely causative agent is:
정답: A
During a primary infection with Epstein-Barr virus (EBV), the virus establishes latency in B lymphocytes.
The transition from lytic to latent infection is tightly regulated by viral gene expression. Which of the following viral proteins is crucial for the establishment and maintenance of EBV latency and is a key target in EBV-associated lymphomas?
The transition from lytic to latent infection is tightly regulated by viral gene expression. Which of the following viral proteins is crucial for the establishment and maintenance of EBV latency and is a key target in EBV-associated lymphomas?
정답: D
A patient with a history of recurrent sinusitis and bronchitis is diagnosed with cystic fibrosis. Sputum cultures repeatedly grow a Gram-negative rod that is oxidase-positive and produces a blue-green pigment. This organism's chronic colonization of the respiratory tract in cystic fibrosis patients is primarily due to its ability to:
정답: A
A patient presents with a chronic cough, weight loss, and night sweats. Chest X-ray shows cavitarylesions in the upper lobes. Sputum is acid-fast positive. Drug susceptibility testing reveals resistance to isoniazid but susceptibility to rifampin, ethambutol, and pyrazinamide. The MOST appropriate treatment regimen should include:
정답: B
A research laboratory is investigating the quorum sensing system in Pseudomonas aeruginosa. They identify a novel autoinducer molecule and a corresponding transcriptional regulator. Disruption of the gene encoding this regulator leads to a significant decrease in the production of virulence factors such as elastase and pyocyanin. Further analysis reveals that this regulator directly binds to the promoter regions of these virulence genes in the presence of the autoinducer. This regulatory mechanism is an example of:
정답: D
A patient with a history of chronic lung disease develops a severe pneumonia. Bronchoalveolar lavage fluid reveals the presence of numerous cysts containing multiple nuclei, which stain positively with silver stains but poorly with Gram stain. The patient's CD4+ T-cell count is within the normal range. The MOST likely causative organism and the preferred treatment are:
정답: B
What is the most appropriate method for sterilizing a heat-labile liquid solution containing essential proteins for use in tissue culture?
정답: B
A clinical microbiology laboratory is performing antimicrobial susceptibility testing on a Streptococcus pneumoniae isolate recovered from a patient with meningitis. The isolate shows reduced susceptibility to penicillin (MIC = 2 µg/mL). The MOST likely mechanism for this reduced susceptibility is:
정답: C
A clinical microbiology laboratory is performing antimicrobial susceptibility testing on a Klebsiella pneumoniae isolate. The isolate is resistant to multiple beta-lactam antibiotics, and further testing reveals the presence of a carbapenemase enzyme. The MOST clinically significant carbapenemase in Klebsiella pneumoniae is often:
정답: A