Stem cells are undifferentiated cells capable of dividing indefinitely and differentiating into all kinds of tissue. There are two main categories of stem cells:

  • Embryonic stem cells, which are those that are part of the inner cell mass of an embryo of 4-5 days, which require the removal and / or destruction of the embryo for their extraction.
  • Adult stem cells, from a born individual, whose main role is to repair the tissue where they are found,

Adult stem cells are subdivided into hematopoietic; which able to differentiate into all kinds of blood cells (red cells, platelets, lymphocytes, etc.) and mesenchymal, which are able to differentiate into tissues such as cartilage, tendon, bone, skin, etc. .

Mesenchymal stem cells are those used in both human medicine and veterinary medicine for the treatment of tissue regeneration and repair.