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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.
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On nearly 20 occasions during the Meta cross-examination, Jones asked Kaley to look at the transcript from her 2025 deposition, which contradicted some of the responses she gave during her testimony. Many of those questions were about how a specific action by her family members or a specific experience impacted her mental health, with Kaley saying on Thursday they either didn’t have an impact or didn’t significantly contribute to anxiety and depression. Her deposition from about a year ago often said the opposite.
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