Science Take-Out® Pathogens, Antibodies, And Vaccines. Students create models of pathogens, antibodies, and antigen-antibody ... Fire up your students with this high-octane chemistry demo that illustrates combustion reactions. ... Theyll be amazed to learn how our bodies learn to battle the weakened germs in a vaccine and make the antibodies it needs to ... interaction and perform simulated laboratory tests to compare the antibody levels of unvaccinated and vaccinated children who ...