Nyren’s sequencing method earned the name “pyrosequencing” since it revolved around the production of pyrophosphate. At first, pyrosequencing could sequence only short DNA snippets, with a few nucleotides. In 1996, however, Nyren’s lab demonstrated sequencing of up to 15 bases by using a modified “A” nucleotide to reduce their signal-to-noise ratio.7 In 1998, they increased this to 34 bases by adding another enzyme, called apyrase, to the mix; apyrase degraded unincorporated nucleotides, removing the need for constant wash steps.
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MacBook Air with M5 was built with the environment in mind, and brings Apple even closer to reaching its ambitious plan to be carbon neutral across its entire footprint by 2030. It is made with 55 percent recycled content,8 including 100 percent recycled aluminum in the enclosure and 100 percent recycled cobalt in the battery. It is manufactured with 50 percent renewable electricity, such as wind and solar, across the supply chain. MacBook Air is designed to be durable and repairable, while meeting Apple’s high standards for energy efficiency and safer chemistry. The paper packaging is 100 percent fiber-based and can be easily recycled.9