May 2015 in “Journal of The American Academy of Dermatology” Both treatments help with hair regrowth in alopecia areata, but azathioprine has milder side effects than betamethasone.
May 2015 in “Journal of The American Academy of Dermatology” Both azathioprine and betamethasone treatments help with hair regrowth in alopecia areata, but azathioprine may have fewer side effects.
January 2012 in “Methods in pharmacology and toxicology” Hair follicle culture helps study hair growth but has limitations in modeling the full hair cycle.
June 2008 in “British Journal of Dermatology” Herpes gestationis is linked to certain antigens, atopic eczema affects T cell populations and may be eased by breastfeeding, higher doses of anti-androgen treatment can improve androgenic alopecia, topical minoxidil increases hair thickness, long-term methotrexate therapy can cause liver fibrosis in psoriasis patients, and Lichen Sclerosus et Atrophicus patients aren't at higher risk for autoimmune disorders.
July 1998 in “Dermatologic Surgery” Various techniques and tools for hair restoration were presented in 1998, including a mathematical model for donor area, use of lasers in surgery, methods for controlling grafted hair direction, and ways to increase graft yield. Satisfaction rates were around 39%, and studies showed trauma and dehydration can damage hair follicles.
August 2016 in “Journal of Investigative Dermatology” 
May 2015 in “Journal of The American Academy of Dermatology” 5% minoxidil foam helps women with thinning hair.
Integrin alphavbeta6 is important for wound healing and hair growth, and blocking it may improve these processes.
721 citations,
October 2011 in “Nature” Different types of long-lasting stem cells are responsible for the growth and upkeep of the mammary gland.
551 citations,
November 2013 in “Nature” Certain mature cells in mouse lungs can turn back into stem cells to aid in tissue repair.