Mice
Transgenic mice with nestin-driven GFP (ND-GFP) (4 to 8 weeks) (AntiCancer, Inc., San
Diego, CA) were used as a source of whisker follicles. All animal studies were conducted in accordance with the principals and procedures outlined in the National Institute of Health Guide for the Care and Use of Animals under Assurance Number A3873-1 [8].