To cover the entire sensory field once and only once, dendrites of some sensory system neurons avoid crossing other dendrites from the same type of neurons. In this issue of Cell, Emoto et al. (2004) provide first insight into the molecular mechanisms of dendritic tiling.
Chihara, T., & Luo, L. (2004, October 15). Like poles repel: Molecular mechanisms of dendritic tiling. Cell. Cell Press. https://doi.org/10.1016/j.cell.2004.10.002