Flickr, Wellcome images
The West African Gaboon viper conceals itself on the leaf-littered forest floor thanks to patterning that makes the contours of its body tough to spot.
This is a false-colored scanning electron micrograph of a zebrafish embryo, a popular disease model and study system for drug development and cancer research.
| November 21, 2012
Flickr, Wellcome images
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