The full text of this article hosted at iucr.org is unavailable due to technical difficulties. Research Letter Apremilast and tofacitinib exert differential effects in the humanized mouse model of alopecia areata R. Laufer Britva Skin Research Laboratory, Rappaport Faculty of Medicine, Technion – Israel Institute of Technology, Haifa, Israel Rambam Health Care Campus, Haifa, Israel Department of Dermatology, Rambam Health Care Campus, Haifa, Israel Search for more papers by this author R.