So this doesn't give you any. You hand over one lecture — yours, the one that's actually on your exam — and get back a map of what causes what, with the cards cut from it. Every box carries the slide it came from, so you can check the work instead of trusting it.
Specimen · Bronchial asthma 48 slides → 88 boxes, 75 arrows 88 of 88 carry a source slide
Three thousand facts, each one held on its own, none of them touching. The arrows are the thing you were never given — and they are the only part an exam actually asks you for.