A 35-year-old woman presents to a pre-operative evaluation clinic prior to an elective cholecystectomy. She has a 5 pack-year smoking history. The anesthesiologist highly recommends to discontinue smoking for at least 8 weeks prior to the procedure for which she is compliant. What is the most likely histology of her upper respiratory tract's epithelial lining at the time of her surgery?
ASimple squamous
BSimple columnar
CPseudostratified columnar
DStratified squamous
EStratified columnar
The surgical equipment used during a craniectomy is sterilized using pressurized steam at 121°C for 15 minutes. Reuse of these instruments can cause transmission of which of the following pathogens?
ANon-enveloped viruses
BSporulating bacteria
CPrions
DEnveloped viruses
EYeasts
A 45-year-old woman with β-thalassemia major comes to the physician with a 1-week history of fatigue. She receives approximately 8 blood transfusions per year; her last transfusion was 1 month ago. Examination shows conjunctival pallor. Her hemoglobin level is 6.5 mg/dL. Microscopic evaluation of a liver biopsy specimen in this patient would most likely show which of the following?
ACytoplasmic pink-staining granules that stain positive with PAS
BMacrophages with yellow-brown, lipid-containing granules
CExtracellular deposition of pink-staining proteins
DCytoplasmic brown-pigmented granules that stain positive for S-100
EMacrophages with cytoplasmic golden-brown granules that stain positive with Prussian blue
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