So we call upon C six, C seven, C eight we form the complex. And this complex goes on to a cell membrane of that pathogenic cell and it stimulates the formation of a channel inside that membrane that basically lysis that cell. So what happens is this complex forms or stimulates another complex that is composed of C nine molecules. So we have as many as 18 C nine molecules basically arrange themselves and form a water channel inside that cell membrane. And once we form the water channel with the guidance of this complex, this protein complex water basically moves via osmosis down its concentration gradient and the water molecules move into the cell that blows up the cell eventually the cell lysis. And so what the membrane attack complex consists of is this entire complex that guides the formation of this type of channel that eventually lysis and destroys that pathogenic cell.