The main function of fibroblasts is to maintain the structural integrity of connective tissues by continuously secreting precursors of the extracellular matrix.Fibroblasts are derived from primitive mesenchyme, like all connective tissue cells.

The "Procaine Pump and the cells that died, young at old age", is the answer to an editorial "Suppose we died young, late in life in JAMA (Journal of American Medical Association) in 1977. Based upon the discovery of the telomerase in 1984,

The "Procaine Pump and the cells that died, young at old age", is the answer to an editorial "Suppose we died young, late in life in JAMA (Journal of American Medical Association) in 1977. Based upon the discovery of the telomerase in 1984,