Glandular metaplasia of hair follicles and other responses to vitamin A excess in cultures of rodent skin April 1968 in “ Development ” Margaret H. Hardy 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 journals.biologists.com →