Medicine

Strange treatment may restore sense of smell after COVID
alopecia treatment
A common arthritis drug treats alopecia
Rare double lung transplant saves cancer patient’s life 
butterfly disease
Wounds of kids with “butterfly disease” healed by DNA gel
Reversing hearing loss with regenerative therapy 
Cancer is addicted to iron. It could be a fatal weakness.
tattoo machine
How tattoo machines could revolutionize vaccination 
male birth control pill
Male birth control pill to enter human trials in 2022
persistent coronavirus infection
Vaccine used to treat COVID-19 for first time
bone loss
Space lettuce engineered to stimulate bone growth