Complex sentence: Actin therefore contributes to processes such as the intracellular transport of vesicles and organelles and to muscular contraction and cellular migration, it therefore plays an important role in embryogenesis, the healing of wounds and the invasivity of cancer cells.
Split into simpler sentences: Actin therefore contributes to processes such as the intracellular transport of vesicles and organelles as well as muscular contraction and cellular migration. It therefore plays an important role in embryogenesis, the healing of wounds and the invasivity of cancer cells.