fetal and neonatal skeletal muscle fiber
fetal and neonatal skeletal muscle fiber
A skeletal muscle fiber found at the fetal and neonatal stages. In mammalian fetuses and neonates, skeletal muscle expresses myosin heavy chain-neonatal (MyHC-neo, encoded by the MYH8 gene). This expression disappears shortly after birth and is replaced by expression of adult heavy chain myosins.