Complex sentence: Syncytia also form in infections of the extremely common Respiratory syncytial virus (RSV), this occurs when the F proteins on the surface of the virus cause the cell membranes on nearby cells to merge.
Split into simpler sentences: Syncytia also form in infections of the extremely common Respiratory syncytial virus (RSV). This occurs when the F proteins on the surface of the virus cause the cell membranes on nearby cells to merge.