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... Some chemotherapeutic agents differ from antibiotics only in that they are not secreted by microorganisms, as are antibiotics, but rather are made synthetically in a chemical laboratory. ... A few antibiotics, among them penicillin and chloramphenicol, have now been produced synthetically also.
Recent Developments
Strains of bacteria have arisen that are resistant to commonly used antibiotics; for example, gonorrhea-causing bacteria that high doses of penicillin are not able to destroy may transfer this resistance to other bacteria by exchange of genetic structures called plasmids. Some bacteria have become simultaneously resistant to two or more antibiotics by this mechanism.
Approximate Word count = 424
Approximate Pages = 1.7
(250 words per page double spaced)
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