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MANY efforts have been made to find simple methods for rapid identification of Enterobacteriaceæ. Most of the tests are based on the ability of the bacteria to grow on selective media ...
"This is why we've worked really hard to keep Duolingo free, because we want to give access to education to everybody." Courtesy of Duolingo In 2012, Luis von Ahn (right) and Severin Hacker (left ...
Easily the best free PDF editor you can download right now, it's full of professional-level tools suitable for personal and business use. You'll find a round-up of other top free PDF editor apps ...