Stanford Scientists Regrow Lost Cartilage and Reverse Arthritis

should be an option to add this to titles if needed

Yes, the article mentions mice. Not uncommon, a lot of research is done with mice. The article also includes. "Researchers also found encouraging results in human tissue. Samples collected during knee replacement surgeries began producing new, functional cartilage when exposed to the treatment."

For myself, I do not think the in mice comment is necessary as clearly they have results that work in humans.