Study on Effect of Constant-Release Melatonin on SOX21 Gene January 2011 in “ China Animal Husbandry & Veterinary Medicine ” Jinquan Li We don't know much about this study yet. We're maintaining the world's largest resposity of hair loss research. You can help out the community by sending a PDF of this study here . Not sure how to get a study's PDF? You can email the authors of the study. View this study on en.cnki.com.cn →