TY - STD TI - Fricke C, Lee J-S, Geiger-Rudolph S, Bonhoeffer F, Chien CB: astray, a zebrafish roundabout homolog required for retinal axon guidance. Science 2001, 292:507-510., [http://www.sciencemag.org] UR - http://www.sciencemag.org ID - ref1 ER - TY - STD TI - Department of Neurobiology and Anatomy, University of Utah Medical Center, [http://www-na.med.utah.edu/] UR - http://www-na.med.utah.edu/ ID - ref2 ER -