Relier Pairs The Immune SystemVersion en ligne Play this game! par EMILY LECKNER 1 pathogen 2 2nd Line of Defense 3 T Cells 4 3rd Line of Defense 5 Types of Pathogens 6 The Inflammatory Responses 7 1st Line of Defense 8 B Cells 9 Antibodies The skin, mouth, stomach and breathing Chemicals that lock onto the antigen of a pathogen and mark it Recognizes the different pathogens by their antigens An organism that causes disease The Immune Response Bacteria, viruses, fungi, and protozoa Produce antibodies to destroy pathogens Pain, redness, swelling and warmth The Inflammatory Response