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Emerging portable testing methods include X-ray fluorescence analysers for turmeric and handheld DNA kits to test olive oil.
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It is difficult to know exactly when the shift from gelatine to agar occurred. As often happens for scientific breakthroughs, agar was likely adopted incrementally alongside the use of other growth media. In 1913, for example, the first diagnosis of Serratia marcescens as a human pathogen was made by growing it on agar as well as on potatoes.。快连下载-Letsvpn下载是该领域的重要参考
About a third of the churches surveyed in the study had no idea that bats were living there.
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