PLE Category: Microbiology

PLE-3396

A 55-year-old female with a history of having a prosthetic heart valve was admitted due to persistence of fever for 5 days. Blood culture revealed gram-positive cocci in clusters, which were catalase positive, coagulase negative, and novobiocin sensitive. Which of the following is most likely the causative agent?

PLE-3397

A 4-year-old male was seen having perioral blisters with honey-colored crust. Which among the following is the most important diagnostic test to check a few weeks after treatment of the lesions?

PLE-3398

A group of students came into your clinic, all complaining of vomiting. Upon probing, you learned that they live in the same dormitory and they ate reheated Chinese fried rice for lunch a few hours prior to the consultation. Which of the following is the most likely causative agent?

PLE-3392

What are these acellular parasites of plants with naked RNA that are obligate intracellular and do not cause any human disease?

PLE-3393

Which among the following is the smallest bacteria?

PLE-3394

Which of the following structures is unique for gram-positive organisms?

PLE-3395

In the Gram staining procedure, which of the following is used as a mordant?

PLE-3391

Which of the following agents is added in drug-resistant TB therapy?

PLE-3389

Which of the following is a bacteriostatic agent?