Your body is composed of a spectacular diversity of cell types. These cells were all derived from a single cell that was made when sperm joined with an egg. Interestingly, despite their diversity, cells that serve similar functions in different parts of the body can be "re-purposed" by physicians and scientists to repair damage. In this press release (link below), cells that create cartilage in the nose have been harvested and successfully used to build up cartilage in the knee.
Read the press release here.
