The Howard Hughes Medical Institute has produced some great, interactive resources for medicine and genetics, including a virtual ELISA test and a transgenic fly virtual lab. Go and have a look – there’re also plenty of animations, though even Flashcatcher can’t save them.

Download a worksheet for the ELISA here.

For a simple mock HIV test (using potassium iodide, lead nitrate and a bit of imaginitive labeling), visit the IB Biology Lab Bank