
Cell therapy refers to the use of cells or cellular components to stimulate, modulate, and enhance the function of the body’s cells. Over the past 100 years, physicians have injected cells into patients to treat and restore health. In the mid-1800s, Charles-Édouard Brown-Séquard was the first to inject extracts from animal testes into patients in an effort to extend human longevity. Later, in the 1930s, Paul Niehans used extracts from calf and lamb embryos for the same purpose. Fortunately, science and medicine have since advanced to an era in which animal-derived extracts are used in therapeutic treatment.
Cell therapy advanced dramatically in the mid-20th century: in the late 1950s and mid-1970s, bone-marrow transplants began to help patients suffering from cancer. These transplants helped produce healthy blood cells in patients with blood cancers, and in leukemia patients they were found to generate effective red and white blood cells.
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