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.
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2012年夏天，还在读大学的我第一次到香港。人潮汹涌中，我与朋友经旺角、油麻地穿到尖东，按记忆中港片的图景一一索骥，填满“油尖旺”的拼图。到达尖东时，夜色降临，我瞥见一个巷子悬挂的招牌，先是边缘的灯管闪了一下，再一节一节接上电流，像城市在缓慢地恢复呼吸。不多时，这个城市的霓虹便次第点亮。其中一块灯牌属于大富豪夜总会，当时它被视为香港最大、最豪华的高端夜总会之一。