During a primary immune response to a pathogen, different components of the immune system cooperate to clear the infection. Which of the following processes is classified as a component of the specific (adaptive) humoral immune response?
Clonal selection and proliferation of B-lymphocytes into antibody-secreting plasma cells
Activation of cytotoxic T-lymphocytes by interleukins to lyse infected host cells
Phagocytosis of pathogen-antibody complexes by neutrophils in the tissue
Production of histamines by mast cells to increase capillary permeability
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.