Before agar, microbiologists had experimented with other foodstuffs as microbial media. They turned to substances rich in the starches, proteins, sugars, fats, and minerals that organisms need for growth, testing with broths, bread, potatoes, polenta, egg whites, coagulated blood serums, and gelatine. However, none worked particularly well: all were easily broken down by heat and microbial enzymes, and their surface, once colonized, became mushy and unsuitable for isolating microbes.
Artie Beaty, Contributing WriterContributing Writer
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Future-Proof: This structure makes it much easier to implement features like alternative route suggestions based on these key border points.
有前款第五项规定的滋扰、纠缠、跟踪行为的，除依照前款规定给予处罚外，经公安机关负责人批准，可以责令其一定期限内禁止接触被侵害人。对违反禁止接触规定的，处五日以上十日以下拘留，可以并处一千元以下罚款。