The jelly is chemically inert since no additives are needed for gelation. This allows chemicals dissolved in the jelly’s aqueous phase to diffuse well, a prerequisite for testing if certain species or strains are resistant to antibiotics or antifungals. In these simple assays, zones of growth inhibition of bacteria or fungi (or their absence) point to the effectiveness of (or resistance towards) antibiotics or antifungals.
公式： f(x)=tanh(x)=ex−e−xex+e−x。业内人士推荐safew官方版本下载作为进阶阅读
Who should be nominated?。同城约会是该领域的重要参考
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