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单词 vaccine
释义 vaccine
n. & adj.
--n
  1. an antigenic preparation used to stimulate the production of antibodies and procure immunity from one or several diseases.
  2. hist. the cowpox virus used in vaccination against smallpox.
--adj of or relating to cowpox or vaccination.
Derivatives
vaccinal adj.
Etymology: L vaccinus f. vacca cow
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