@article {1577,
	title = {Beta-catenin defines head versus tail identity during planarian regeneration and homeostasis},
	volume = {319},
	year = {2008},
	month = {2008//},
	url = {http://dx.doi.org/10.1126/science.1150029},
	author = {Gurley, K. A. and Rink, J. C. and Alvarado, A. S.}
}
