#B2.2.1
describe non-specific defence systems of the human body against pathogens, including examples of physical, chemical and microbial defences
#B2.2.2
explain how platelets are adapted to their function in the blood
#B2.2.3
describe physical plant defences, including leaf cuticle and cell wall
#B2.2.4
explain the role of the immune system of the human body in defence against disease
#B2.2.5
explain how white blood cells are adapted to their functions in the blood, including what they do and how it helps protect against disease
#B2.2.6
describe chemical plant defence responses, including antimicrobial substances