research Skin Adipocyte Stem Cell Self-Renewal Is Regulated by a PDGFA/AKT Signaling Axis 106 citations, October 2016 in “Cell Stem Cell” PDGFA/AKT signaling is important for the growth and maintenance of certain skin fat cells.
research Downstream Molecular Responses to Volatile Signaling in Roots January 2021 Plant roots respond to fungus smells by possibly using certain proteins and a plant hormone to change root growth, but more research is needed.