Three-way control of fetal heart-cell proliferation could help regenerate cardiac cells

Heart muscle cells do not normally replicate in adult tissue, but multiply with abandoned during development. This is why the loss of heart muscle after a heart attack is so dire -- you can't grow enough new heart muscle to make up for the loss. Researchers describe the interconnections between three-molecules that control fetal, heart-muscle-cell proliferation in a mouse model that will help cardiologists better understand the natural repair process after heart attacks.

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