Guar gum, a plant colloid, costs less than agar and is better suited for growing thermophilic bacteria, but is also more difficult to handle, being more viscous and less transparent. The bacterial polysaccharide xanthan is cheaper as well but forms weaker jellies that, as with carrageenan, might result in puncturing its surface. Other colloids, like alginate (from brown seaweed) and gellan gum (from a bacterium), don’t set solely based on temperature and require additives for gelation. These additives might interfere with microbial growth and make the preparation of those jellies less handy than agar plates.
The company is also using Gemini to bring on-device Scam Detection for calls to Samsung’s Phone app. The tool alerts users if someone on their call is using speech patterns commonly heard from scammers. Google says the feature is never used while on a call with someone in your contacts and is off by default.
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