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A 25-year-old woman who wears daily soft contact lenses presents with a central corneal ulcer in her left eye. She reports no trauma, does not sleep in lenses, and discontinued use when symptoms began. She recently swam in a freshwater lake. Corneal culture grew a microorganism. Which organism is most likely responsible for this infection?

An 8-year-old boy who recently arrived in the USA developed a severe sore throat. On examination, a grayish exudate (pseudomembrane) is seen over the tonsils and pharynx. The cause of the boy’s pharyngitis is most likely;

A 30-year-old woman presents with a red, itchy rash in skin folds (under breasts and groin) persisting for several weeks despite over-the-counter (OTC) antifungal creams. She has poorly controlled diabetes mellitus. Diagnosis: Cutaneous candidiasis caused by Candida albicans. Which of the following is the most appropriate treatment?

Which of the following statements below best describes a subunit vaccine?

A 45-year-old farmer presents with a painless ulcer on the right hand featuring a black necrotic center (eschar) and marked swelling. The lesion began as an itchy bump a few days after handling dead livestock. He denies fever or systemic symptoms. What is the most likely diagnosis?

The most common subcutaneous mycosis in temperate regions, sporotrichosis, is usually treated with:

Following guided tissue regeneration, when can the patient resume self-care?

What type of techniques is used to create or widen the attached keratinized gingiva by placing grafts of various types?

What is the main advantage of laser therapy in periodontal surgery?

When should nonabsorbable sutures typically be removed?