최신American Society of Microbiology ABMM - ABMM무료샘플문제
A clinical trial is evaluating the efficacy of a new antifungal agent against invasive aspergillosis. Serum galactomannan levels are being used as a biomarker to monitor the infection. A decrease in galactomannan levels during treatment would indicate:
During the processing of stool specimens for ova and parasite examination, the formalin-ethyl acetate concentration procedure primarily serves to:
A patient develops a febrile illness with a diffuse petechial rash after a camping trip. Serological testing reveals a four-fold rise in antibody titer to Rickettsia rickettsii. The vector responsible for transmitting this organism is a:
A patient with HIV infection and a low CD4+ T-cell count presents with fever, weight loss, and cough. Chest X-ray shows diffuse interstitial infiltrates. Sputum induction reveals oval yeast cells with narrow-based budding. The MOST likely diagnosis is:
A serum sample from an asymptomatic patient screened for syphilis yields a reactive Rapid Plasma Reagin (RPR) test result with a titer of 1:16, but a non-reactive Treponema pallidum particle agglutination (TP-PA) test. What is the most likely interpretation of these findings?
A clinical laboratory manager is implementing a new automated blood culture system. Which aspect is LEAST likely to be part of the initial verification/validation process before clinical use?
A patient with a history of travel to a tropical region presents with cyclical fevers and chills.Peripheral blood smear reveals the presence of merozoites and schizonts within erythrocytes. The absence of crescent-shaped gametocytes makes Plasmodium falciparum less likely. The MOST probable species is:
Which of the following organisms is an obligate intracellular bacterium transmitted by arthropod vectors and is a common cause of Rocky Mountain Spotted Fever?
A patient with a history of neutropenia develops a severe sinus infection. Tissue biopsy reveals broad, ribbon- like, non-septate hyphae with right-angle branching. The MOST likely causative organism belongs to the order:
A clinical microbiology laboratory is using a nucleic acid amplification test (NAAT) to detect Mycobacterium tuberculosis directly from sputum. A positive result indicates:
During the investigation of a foodborne illness outbreak linked to raw sprouts, several bacterial isolates are obtained from patient stool samples and the implicated food source. Which of the following molecular methods would be MOST useful for establishing a definitive link between the clinical isolates and the food isolate?
A public health investigation is underway following several cases of encephalitis in a specific geographic region during the summer months. Mosquitoes are abundant in the area. Serological testing of patient CSF samples reveals IgM antibodies against a flavivirus. The MOST likely causative agent is:
Acyclovir is a commonly used antiviral agent effective against Herpes Simplex Virus (HSV) and Varicella- Zoster Virus (VZV). Its selective toxicity relies on which initial step for activation within infected cells?