In healthy cells, we have a special type of protein known as BCL Two. Now, BCL Two, what it does is it basically inhibits the process of apoptosis from actually taking place. But if the cell is damaged in some way or form, what happens is another type of protein is produced and released and this protein is known as Bax. Bax shown in purple. So what happens is, once the cell is actually damaged back, bax moves on onto the cell membrane of the mitochondria and attaches next to this BCL Two protein. Now, what Bax does is it prevents the BCL Two protein from inhibiting apatosis.