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What we found is that the way this work is organized leaves these children in a very unsafe work environment, Arcury told me

in a $47 billion deal that would create the worlds largest publicly traded tobacco company and attempt to make up for a decline in smoking in the U.S

For optogenetic experiments on freely moving mice, an optical fiber (200 m core, NA = 0.39, Thor Labs) coupled to a ferule (1.25 mm) was implanted just above the VTA ipsilateral to the viral injection (coordinates from bregma: AP 3.1 mm, ML 0.5 mm, DV 4.4 mm from the skull), and fixed to the skull with dental cement (SuperBond, Sun Medical)

These are often nice to pick out in person as you can get a feel for them and compare similar pieces