@misc{indiciaedaee43f971f5, title = {Endogenous opioid systems regulate cell proliferation in the developing rat brain.}, author = {I S Zagon and P J McLaughlin}, year = {1987}, doi = {10.1016/0006-8993(87)91440-5}, url = {https://pubmed.ncbi.nlm.nih.gov/3607463/}, note = {Source identifier: 3607463} }