| 21. | The ecological effects of tetracyclines and quinolones have been observed.
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| 22. | Strains do not tolerate tetracycline and do not grow on LB medium.
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| 23. | Medications such as tetracycline can cause a reaction when combined with the sun.
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| 24. | It is generally susceptible to antibiotics such as streptomycin, tetracycline and chloramphenicol.
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| 25. | Tetracyclines inhibit enzymes that soften and break down cartilage.
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| 26. | Other drugs can treat anthrax, including garden-variety penicillins and tetracyclines.
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| 27. | A cousin of tetracycline, it commonly is used to treat severe acne.
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| 28. | But all are curable with antibiotics such as tetracycline.
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| 29. | Similar resistance in the 1980s rendered penicillin and tetracycline ineffective for treating gonorrhea.
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| 30. | Doxycycline is more stable than tetracycline for this purpose.
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