An Introduction to Cell Therapy
Using cellular products as a therapy is not a contemporary concept; literature dates back to the late 19th century, when Charles Édouard Brown-Séquard pioneered organotherapy (using organ extracts as a medical treatment) to suppress human aging. While this failed as an anti-aging therapeutic, it did bring into discussion the use of cells as a therapeutic agent, which has gained vast popularity in the modern day.
Source: Technology Networks