Antibiotic is a substance that can hold effective microorganisms, but because at present, found that the resistance of microorganisms. Natural extracts is an interesting choice that may be used to replace antibiotic substances. This experiment, the extract, tea tree are used to test the effect of Salmonella infections Typhi Shigella dysenteriae which is เชื้อก่อ disease in the gastrointestinal tract. By the experiment, alongside the positive control is Gentamycin negative and control is water, using disc diffusion method to test if the extract from green tea effectively inhibit bacteria?
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