The first tray of yellow-lidded specimen jars holds chunks of flesh – lung, perhaps, or muscle – some cerebrospinal fluid and another liquid, possibly from a brain abscess. The second holds a rainbow of colourful fungi, cultivated from those specimens.
One growth is green and fluffy, like something you would find in a sharehouse fridge – penicillium, maybe. Another is a dark grey or brown, like animal fur. There are bright white fuzzballs and blackish blobs. One growth leaches red into the medium it sits in.