Because student proficiency develops over time, assessment retakes play an important role in accurately measuring learning.

Retrons adapted from E. coli enable genome editing in 15 diverse bacterial species, expanding recombineering tools across major microbial phyla.

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CRISPR-Cas9 genome editing exploits the CRISPR-Cas system to modify a genome in a targeted manner. Guided by RNA, the Cas9 endonuclease breaks DNA at a target sequence. Imprecise repair of the double ...

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From lens focal lengths and fill-flash to portraits, macro or stunning landscapes there are techniques for everyone. Learn how to use metering, considering composition and shoot everything from ...