T Level Health, Core B core science concepts. Template adapted from Canva.com.
B1.20 The role of non-specific and specific defences to protect the body against invasion from a foreign
substance:
• non-specific defences:
o use of physical and chemical barriers
o inflammation
o phagocytosis
• specific defences:
o actions of T-cells
o actions of B-cells
B1.21 The differences between cell-mediated immunity and antibody-mediated immunity including:
• cell-mediated response is associated with T-lymphocytes destroying pathogens (causative agents)
without producing antibodies
• antibody-mediated response is associated with B-lymphocytes destroying pathogens (causative
agents) by producing antibodies against it
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