295 citations
,
  June 2009   in “Science”    Stromal stem cells may help heal wounds by becoming structural cells or affecting the immune system, but more research is needed to understand how.  
     
           81 citations
,
  September 2005   in “The American journal of pathology”    Activin helps skin growth and healing mainly through stromal cells and affects keratinocytes based on its amount.  
               53 citations
,
  April 2016   in “Stem cell research & therapy”    LL-37 helps stem cells grow and move, aiding tissue regeneration and hair growth.  
               45 citations
,
  August 2018   in “Haematologica”    Macrophage iron release is crucial for hair growth and wound healing.  
               42 citations
,
  December 2011   in “The journal of immunology/The Journal of immunology”    RANKL causes lymph nodes to grow by making certain cells multiply.