Now, the bacteria phage usually undergoes a pathway, a cycle known as the Litig cycle. But other types of bacteria exist that can or other types of viruses exist that can also undergo the lysogenic cycle. So when the virus enters the cell there are two types of pathways that can be taken by that virus. We have the lytic cycle, the lytic pathway, as well as our lysogenic cycle lysogenic pathway. So let's begin by discussing the lytic cycle which is basically followed by our bacteria phages viruses that infect bacterial cells. So under this pathway, as soon as the virus actually injects itself into the cell or injects the nucleic acid into that cell, in the case of the bacteriophage, the bacteria phage only actually injects the nucleic acid into the cell.