Answer:
The several kinds of penicillin synthesized by various species of the mold Penicillium may be divided into two classes: the naturally occurring penicillins (those formed during the process of mold fermentation) and the semisynthetic penicillins (those in which the structure of a chemical substance—6-aminopenicillanic ...
Answer:
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Explanation:
Twenty-first Amendment, amendment (1933) to the Constitution of the United States that officially repealed federal prohibition, which had been enacted through the Eighteenth Amendment, adopted in 1919. The Twenty-first Amendment to the Constitution of the United States, ratified in 1933.
