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What does a vaccine contain that triggers a specific immune response?
A
Most vaccines are given by injection, although some are given by mouth or nasal spray.
B
Its memory cells recognise only the antigens in that vaccine.
C
Pathogen antigens in a harmless form.
D
It contains a harmless form of the pathogen that cannot cause the disease.
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6.3.12 Vaccines and medicines Flashcards
20 flashcards on OCR GCSE Biology 6.3.12 Vaccines and medicines: the key terms, definitions and processes you need to recall for the written papers.