| Semple vaccine | A modification of the original (Pasteur) rabies vaccine, formerly widely used in the U.S., prepared from rabbit nerve tissue, inactivated with phenol and administered in 14 to 21 daily injections; has variable potency and is associated with a high incidence of postvaccinal demyelination. (05 Mar 2000) |
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| Semple, Sir David | <person> English physician, 1856-1937. See: Semple vaccine. (05 Mar 2000) |