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.
US Secretary of State Marco Rubio had said Washington was investigating the "highly unusual" incident.
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The money paid to Crawford for providing medical assessments is separate from the money awarded to people who have suffered as a result of vaccine damage.
The V&A has worked with YouTube to rebuild the design and experience of the platform, using internet archives from December 2006 - the oldest available.