Defence+against+disease

If you suffer from allergies, you may be familiar with the image above. This person is having a ‘skin prick’ or ‘scratch’ test, in which a tiny drop of the possible allergen is pricked into the skin and the reaction measured. Allergens can be a wide variety of substances, from pollens and dust mite faeces to eggs, milk and nuts. Up to 40 different substances can be tested at once. This is the link to our Google Presentation on the Immune System. I have allocated one slide with a topic for each pair of students. You can add another slide if you need to, but just a few brief dot points under the heading will be sufficient. **More sites for revision of Unit 3: Area of Study 2:**
 * Read about How Allergies Work (pages 1, 2 and 3 including the video) and Allergic Reactions at How Stuff Works.
 * Read about Autoimmune diseases here and Disorders of the Immune System from BioNinja
 * A great PowerPoint about the Immune Response – note the diagrams!
 * Quizlet flashcards for Unit 3: Area of Study 2: Detecting and Responding
 *  Acquired Immunity from BioNinja
 * Interesting article from CSIRO Helix about “Perfumes for Pests” – a scent that plants produce when infected with jumping plant lice, that also attracts a small parasitoid wasp, which feeds on the lice.