Columbia University has developed a tissue production and three-dimensional printing method that can be used to create hair follicles. As noted by Med Gadget, this is a real salvation from baldness. Scientists were able to grow follicles in the laboratory and in live rodents.
So, the printer has long, thin printed elements with a 100: 1 aspect ratio. They make it possible to obtain components that are important for creating human skin. Using this system, scientists have created the structure of human skin by forming a thin layer of gel from collagen and human fibroblasts. Next came the nozzle, resembling a needle. She made it possible to create deep, narrow holes in the gel.
Then the dendritic progenitor cells, which develop into hair follicles, were seeded into the wells and flooded with a cocktail of bioactive factors. It helped them develop into mature hair follicles. Scientists transplanted the resulting structure, resembling skin, nude mice. After 4-6 weeks in the field of transplantation, the growth of structures, very much like real human hair, was already noticeable.