One way hemolysin lyses erythrocytes is by forming pores in phospholipid bilayers. This fibrinogen interferes with normal blood clotting and/or lyses of blood clots. Perforin is released by cytotoxic T cells and lyses virally infected and transformed cells. Pelareorep is an oncolytic virus, which means that it preferentially lyses cancer cells. New phages are assembled within the cell until the cellular membrane "lyses" (splits open). The process of host lyses and release is called the lytic cycle. Replication of the organism continues until the amoeba lyses. The viremia arises because LDV lyses the cell after replication. The cell lyses and a haemolytic anaemia results. After assembly, the host cell lyses (bursts) and releases the new viruses.