Agar’s low viscosity also makes it easy to pour into Petri dishes, and its transparency permits observation of microbes growing on its surface.7 Also aiding in this is its low syneresis (extrusion of water from the gel), guaranteeing less surface “sweating”: Once a plate is inoculated, bacterial colonies stay in place and do not mix.
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The bulk of this is thought to have been accrued by five key departments – the Cabinet Office, Home Office, Department of Health and Social Care, Treasury and UK Health Security Agency, which have been repeatedly asked to provide evidence.，这一点在同城约会中也有详细论述
本次的年度征文设题很巧妙，体现了现代科技与传统人力对决的意思。