It’s a real difficulty for students that the AQA A-level biology textbook doesn’t include a diagram of an ELISA. So here’s notes on one page covering the ELISA stages, with a diagram of the specific type of ELISA on the AQA course (an indirect ELISA), and explaining how it links to other things students may know about like pregnancy tests and COVID lateral flow tests.
There’s an explanation of what monoclonal antibodies are, explanation of artificial passive immunity as an extension, and links to some good videos.
9/3/2024 update: new version! Clearer numbering of the stages to link diagram to text, shortened URLs, brighter colours and better paragraphing. Also added a version tuned to print better in black and white.
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