Bugs, drugs, and the lab tests that tell them apart.
Gram-positive cocci identification. Catalase, coagulase, hemolysis patterns, and the decision tree that sorts them all.
What bugs appear at what CD4 count. The slider that teaches you the ladder, prophylaxis thresholds, transplant timeline, and every board trap they love.
Bacterial vs viral vs fungal CSF patterns, age-based organisms, empiric treatment, Waterhouse-Friderichsen, Cryptococcus in HIV, dexamethasone timing.