Retinal cells see up

A new type of retinal cell with tree-like dendrites detects upward motion, researchers report in today's linkurl:issue;;http://www.nature.com/nature/journal/v452/n7186/abs/nature06739.html of __Nature.__ The method used in the current study to detect cell subtypes may prove useful in finding molecular markers of other retinal cells, as well as brain neurons. It was a fortuitous discovery, said author Markus Meister from Harvard University. The researchers had set out to look for retinal ce