Khan Academy Static

How does you body defend itself against invaders, such as disease-causing bacteria and viruses? Learn more about your immune system, what cells make it up, and how it works in many different ways to protect you from harmful microbes (pathogens).

9837_Inflammatory_response.html

9835_Cytotoxic_T_cells_and_MHC_I_complexes.html

9831_Types_of_immune_responses_Innate_and_adaptive_humoral_vs_cell_mediated.html

9833_Professional_antigen_presenting_cells_APC_and_MHC_II_complexes.html

9830_Role_of_phagocytes_in_innate_or_nonspecific_immunity.html

9836_Review_of_B_cells_CD4_T_cells_and_CD8_T_cells.html

9832_B_lymphocytes_B_cells_.html

9834_Helper_T_cells.html