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nature : produced by Streptomyces or semi-synthetic preparation of a basic type of broad-spectrum antibiotics. By Streptomyces directly from the tetracycline and oxytetracycline, aureomycin. Semi-synthetic preparation of a Central America - he (oxytetracycline A ene), doxycycline (doxycycline), minocycline - (minocycline). With four Central (benzene and 4) to the mother of antibiotics. Yellow crystal. Can inhibit Gram-positive and negative bacteria, mycoplasma, chlamydia, Rickettsia body, protozoa, and spirochetes, can be used to prevent animal diseases, promoting livestock childhood growth, and control of plant diseases, such as food preservation. The drugs exist between the close of cross-resistance. In recent years, some common pathogens high rate of resistance, restricting the use of drugs.
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