A gardener accidentally punctures their skin with a rose thorn, introducing Staphylococcus aureus bacteria into the dermis. Which of the following processes or components triggered by this injury is not a part of the non-specific (innate) immune response?
Phagocytosis of the bacteria by neutrophils in the damaged tissue.
Release of histamines by mast cells to increase local capillary permeability.
Secretion of highly specific opsonising antibodies by plasma cells.
Blood clotting initiated by platelets to seal the breached physical barrier.
40 exam-style questions on OCR A A Level Biology Communicable diseases, disease prevention and the immune system. Each one has a worked solution and a mark scheme showing where the marks go.