And as you're thinking about this, we're continuing to mutate.

We know the virus will mutate. It will be a different virus.

In prostate cancer, the cells of these prostate glands mutate into cancer cells.

This occurs because the virus can mutate over time when exposed to medication.

Life needs a membrane to contain itself so it can replicate and mutate.

And experts worry that the novel H1N1 virus could mutate into a more severe strain.

You know, we mutate during four billion years before, but now, because it's me, we stop. Fin.

It is very hard to develop vaccines for viruses that mutate constantly such as influenza or HIV.

When these mutate, they change their shape, and the antibodies don't know what they're looking at anymore.

You know, we mutate during four billion years before, but now, because it's me, we stop. Fin. (Laughter)

On the contrary, it is only when these viruses enter a high density poultry operation that they mutate into something far more virulent.

Changes in the balance of power and the dynamism of international relations often mutate unforeseeably into chaotic scenes of tense contradiction and conflict.

A staph cell can be next to a muscle cell in your body and borrow genes from it when antibiotics come, and change and mutate.

Cancer cells mutate and they gain the ability to release lots of those angiogenic factors, natural fertilizer, that tip the balance in favor of blood vessels invading the cancer.

Cancer cells mutate, and they gain the ability to release lots of those angiogenic factors, natural fertilizer, that tip the balance in favor of blood vessels invading the cancer.

The danger is that some germ like staph will be will mutate into something that's really virulent, very contagious, and will sweep through populations before we can do anything about it.

But because their DNA replication system might be broken in some way, they continue to mutate, so eventually you have one version that's able to not be knocked out by whatever method you get.

The most effective cancer vaccine is likely to raise an immune response against a broad range of tumor antigens to minimise the chance of the tumor being able to mutate and become resistant to the therapy.

Yet another area of regional and global concern was the spread of avian influenza, especially the real possibility that the virus might mutate at some point into a form capable of human to human transmission, leading to a possible pandemic.