What are medical advances in which cloning is essential?

Cloning is essential in several medical advances, particularly in regenerative medicine and therapeutic cloning. It allows for the generation of patient-specific stem cells, which can be used to repair or replace damaged tissues and organs. Additionally, cloning can facilitate the production of genetically identical animals for research, enabling studies on diseases and testing of new treatments. Furthermore, cloning technologies can aid in the development of personalized medicine by creating tissues that closely match a patient's genetic makeup.