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Some test

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Math

${}_{p}F_{q}\left({a_{1},\ldots ,a_{p} \atop b_{1},\ldots ,b_{q}};z\right)$

Chem

${\ce {Hg^{2}+->[I-]HgI2->[I-]{[Hg^{II}I4]^{2}-}}}$

Thumbnails

File:Test:person-holding-laboratory-flask-2280571.jpg

PDF Handler

My PDF