I recently did a poll on stem cell homing.
As you can see from the poll results above, most respondents believe that stem cells can home depending on circumstances. Almost 2/3 of respondents believe that stem cells sometimes or always home in to areas of disease.
However, most respondents did not believe in this being a universal property.
Why would stem cells home to diseases? It seems that injured tissues release cytokines that attract certain cells including immune cells. Maybe stem cells too?
It’s also possible that injured tissues change the adhesion molecules they express on their surfaces so that stem cells tend to stick and then stick around.