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Agar was first introduced into the laboratory in 1881. Since then, microbiologists have depended on agar to create strong jellies. When microorganisms are streaked or plated onto this jellied surface and incubated, individual cells multiply into distinct colonies that scientists can easily observe, select, and propagate for further experiments. Many of the most important findings in biological research of the last 150 years or so — including the discovery of the CRISPR/Cas9 gene-editing tool — have been enabled by agar.4 Agarose, a derivative of agar, is also essential in molecular biology techniques like gel electrophoresis, where its porous gel matrix separates DNA fragments by size, enabling researchers to analyze and isolate specific genetic sequences.
"What we've always said is talk to your loved one, make a decision and sign on the register, because we know when a patient has opted in and had those conversations, consent is much higher in those circumstances," said Harpreet Matharu, an organ donation specialist nurse for the NHS.
He tells BBC Newsbeat that he expected to receive a cease and desist letter from the retail giant after describing some of the clothes as "boring" and "tacky PE kit".