Hey friends, I have a couple of questions that I ran into during my NBME 11 today. Any insight about anything is very appreciated.
1. In a positive PPD induration, the predominant cell is what? The answer was macrophages, with the main distractor being CD8s. I know that a Type IV Hypersensitivity rxn activates T cells AND macrophages, but would CD4 T cells be correct? I always thought T cells were the main responders that cause the induration in a positive PPD test.
2. I got a transudate vs. exudate question, and I can't tell what the correct answer is. Basically SG: 1. 02, many neutrophils, and cellular debris. I thought the answer was exudate, but the answer key posted by some random person online says transudate. I is that a mistake? Any thoughts on this one?
1. In a positive PPD induration, the predominant cell is what? The answer was macrophages, with the main distractor being CD8s. I know that a Type IV Hypersensitivity rxn activates T cells AND macrophages, but would CD4 T cells be correct? I always thought T cells were the main responders that cause the induration in a positive PPD test.
2. I got a transudate vs. exudate question, and I can't tell what the correct answer is. Basically SG: 1. 02, many neutrophils, and cellular debris. I thought the answer was exudate, but the answer key posted by some random person online says transudate. I is that a mistake? Any thoughts on this one?