Viral Life Cycle
Viruses are similar to living organisms, however there are differences. One of the ways a virus can be seen as living is that a virus needs to replicate and create progeny. However, unlike organisms, a virus cannot survive on its own. It is only active when replicating within a host, using a hosts' resources and food. Once inside a host, a virus's sole purpose is to make as many copies of itself, and infect other host cells; everything it does is to benefit its fitness and increase the number of its offspring.
Read more about Viral Life Cycle: Overview, Exposure of Host, Viral Entry, Viral Replication, Viral Shedding, Viral Latency
Famous quotes containing the words life and/or cycle:
“Greater love hath no man than this, that a man lay down his life for his friends.”
—Bible: New Testament Jesus, in John, 15:13.
In Ulysses, James Joyce wrote, “Greater love than this ... no man hath that a man lay down his wife for his friend.”
“The lifelong process of caregiving, is the ultimate link between caregivers of all ages. You and I are not just in a phase we will outgrow. This is life—birth, death, and everything in between.... The care continuum is the cycle of life turning full circle in each of our lives. And what we learn when we spoon-feed our babies will echo in our ears as we feed our parents. The point is not to be done. The point is to be ready to do again.”
—Paula C. Lowe (20th century)