@misc{indiciaed0ddba9c6916, title = {A role for gradient en expression in positional specification on the optic tectum.}, author = {N Itasaki and H Nakamura}, year = {1996}, doi = {10.1016/s0896-6273(00)80023-9}, url = {https://pubmed.ncbi.nlm.nih.gov/8562091/}, note = {Source identifier: 8562091} }