@misc{indiciae523230b1a679, title = {Drosophila hedgehog acts as a morphogen in cellular patterning.}, author = {J Heemskerk and S DiNardo}, year = {1994}, doi = {10.1016/0092-8674(94)90110-4}, url = {https://pubmed.ncbi.nlm.nih.gov/8313468/}, note = {Source identifier: 8313468} }