HSCI 100 Lecture Notes - Lecture 1: Immunoglobulin A, Peptidoglycan, Anatta

• School: Simon Fraser University
• Department: Health Sciences
• Course: HSCI 100
• Professor: Nienke Van Houten

Document Summary

Is the ability to combat infectious diseases and cancer. The individual"s body makes antibodies against a particular antigen. Primary exposure is shorter-lived and slower to respond while a secondary exposure is a rapid, strong response. This type of immunity is usually long-lasting. It depends on clonal selection and production of memory b and t cells. Can be brought about naturally through an infection or artificially through medical intervention (e. g. , acquired by vaccination) The lymphatic and immune system to the rescue. Innate immunity is always present, broad spectrum responses: physical barriers, phagocytic blood cells, complement. Adaptive immunity pathogen specific and forms memory, takes time to develop: humoral response (antibody, cytotoxic response. The immune system has 3 lines of defense: non-specific physical and chemical barriers, non-specific inflammatory response and proteins, a specific and adaptive or learned response from t and b cells.