bio: 7d and 7e

7d: the third line of defence

7e: the lymphatic system

includes:

• innate immunity
• adaptive immunity
• lymphatic system (role, features, structure, parts, how it works)
• antigen presenting cells - APCs
• humoral immunity (and steps, function)
• cell mediated immunity (and steps, function)
• antibodies (structure, types, how they work)
• antibody functions (opsonisation, neutralisation, agglutination, active complement proteins)