• Growth
  • They maintain impressive growth rates of up to 4 μm/s for several millimeters or centimeters, depending on the species, without ever dividing and are one of the fastest elongating cells in nature. (plantcell.org)
  • development
  • The number and size of the stromal cells, and possibly their functions, depend on the stage of mammary gland development (Richert et al. (wiley.com)