Oncogenes into six categories according to their functions

We have divided the oncogenes into six categories according
to their functions:
1)   signal transducers,
2)   no-receptor kinases,
3)   growth factors,
4)   growth factor receptors,
5)   transcriptionfactors and
6)   others.
Based on our examination of the oncogene origins, we have observed some general relationships between the origins and the functional categoriesof the oncogenes