These are the kinds of fields technologists, pathologists, and other medical professionals look at every day to save lives. Try your hand. See if you have what it takes.
In the lab, the call can change a life. Here it is practice: look, then name what you see. Three trays a day. Play any of them, or all three.
Spotting these fields is a highly technical skill. The world does not have enough people who can do it. This game trains the human call. The tools exist now to make that work more engaging, strip out most of the normal work, and leave specialists the truly difficult diagnoses — the ones that save lives.
Human morphology is normal tissue and cells. Organisms are parasites, bacteria, and fungi. Abnormal is disease shapes: sickle cells, leukemia, schistocytes, and the like.
Each tray is six fields, four diagnoses, one guess per field.
The boxes track that tray: green is a hit, red is a miss.
Each mode keeps its own streak. Stored in this browser.
Keys 1–4 or A–D select an answer. Hover the field for a loupe; scroll to change power. Double-click for the full frame.
Images are public-domain or freely licensed teaching files, mostly CDC and Wikimedia Commons. This is a game, not medical advice.