Explanation:
Edward Jenner developed the first successful vaccine against smallpox in 1796 using cowpox virus. Pasteur developed rabies vaccine, Koch TB bacterium, Salk polio.
Explanation:
Diapedesis (extravasation) is the migration of leukocytes through the endothelial junctions of capillaries into tissues in response to inflammation. Chemotaxis is the directed movement along a chemical gradient, phagocytosis is ingestion, opsonization is coating for phagocytosis. Both diapedesis and chemotaxis are part of the inflammatory response.
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