Bibliography (19):

1. Somatic evolution and global expansion of an ancient transmissible cancer lineage

2. Mitochondrial Capture by a Transmissible Cancer

3. Canine transmissible venereal tumor genome reveals ancient introgression from coyotes to arctic sled dogs

4. Cancer across the tree of life: cooperation and cheating in multicellularity

5. Nothing in evolution makes sense except in the light of parasites

6. Wikipedia Bibliography:

   1. Clonally transmissible cancer

   2. https://en.wikipedia.org/wiki/Devil_facial_tumour_disease

      https://en.wikipedia.org/wiki/Devil_facial_tumour_disease

   3. https://en.wikipedia.org/wiki/Canine_transmissible_venereal_tumor

      https://en.wikipedia.org/wiki/Canine_transmissible_venereal_tumor

   4. https://en.wikipedia.org/wiki/Clonally_transmissible_cancer#Bivalves

      https://en.wikipedia.org/wiki/Clonally_transmissible_cancer#Bivalves

   5. https://en.wikipedia.org/wiki/Animal

      https://en.wikipedia.org/wiki/Animal

   6. https://en.wikipedia.org/wiki/Dicyemida

      https://en.wikipedia.org/wiki/Dicyemida

   7. https://en.wikipedia.org/wiki/Orthonectida

      https://en.wikipedia.org/wiki/Orthonectida

   8. https://en.wikipedia.org/wiki/Myxosporea

      https://en.wikipedia.org/wiki/Myxosporea

   9. https://en.wikipedia.org/wiki/Henneguya_zschokkei

      https://en.wikipedia.org/wiki/Henneguya_zschokkei

   10. https://en.wikipedia.org/wiki/Trichoplax

       https://en.wikipedia.org/wiki/Trichoplax

   11. https://en.wikipedia.org/wiki/Cnidaria

       https://en.wikipedia.org/wiki/Cnidaria

   12. https://en.wikipedia.org/wiki/Caspase

       https://en.wikipedia.org/wiki/Caspase

   13. https://en.wikipedia.org/wiki/Bcl-2

       https://en.wikipedia.org/wiki/Bcl-2

   14. https://en.wikipedia.org/wiki/P53

       https://en.wikipedia.org/wiki/P53