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Image of the Day
Macrophages Physically Relay Signals Between Cell Types
Catherine Offord | May 1, 2017
Time-lapse imaging shows the immune cells transferring chemical signals during pigment pattern formation in developing zebrafish.
Infographic: How the Zebrafish Got Its Stripes
Catherine Offord | Apr 30, 2017
Immune cells called macrophages shuttle cellular messages in the skin.
Revenge of the Weeds
Amy Coombs | May 20, 2012
Plant pests are evolving to outsmart common herbicides, costing farmers crops and money.
How Tigers Get Their Stripes
Bob Grant | Feb 22, 2012
For the first time researchers have demonstrated the molecular tango that gives rise to repeating patterns in developing animal embryos.
How the Zebra Got Its Stripes
Jef Akst | Feb 9, 2012
Zebras may have evolved their striped coat to avoid blood-sucking flies.
How skunks got their stripes
Megan Scudellari | Jun 7, 2011
The evolution of bold warning coloration in mammals.