Stem cells provide hope for new beginnings small, incremental steps, cells rather than organs, repair rather than replacement.

It's not like we're making a little mini device for each of the different cell types.

And we're integrating this now with a whole era of cellular engineering, and integrating exponential technologies for essentially 3D organ printing replacing the ink with cells and essentially building and reconstructing a 3D organ.

One of the paradoxes of this process is that in adult birds and mammals the total number of brain cells remains remarkably constant. The new neurons replace older ones of the same kind that die a process of natural rejuvenation.

The sudden loss of many brain cells as a result of strokes or injuries must have serious effects on an animal s survival. It seems likely that the replacement of neurons in the adult brain did not evolve to make up losses due to illness or lesion, but as a process of constant renewal, a few cells being replaced every day.

Laboratories around the world are trying to develop ways to bring this knowledge to clinical situations. The trick will be to induce the brain to produce and deliver to the correct destination any kind of neuron that might be needed, so that regardless of cell class, new cells of the required kind can replace others of the same type that have died.

So, I added these protocells together to the system, and protocell A and protocell B fused together to form a hybrid protocell AB.

For this fish, it's actually whole cells with nuclei and membranes.

And I think they'll be a new era of your own stem cell banking to have in the freezer your own cardiac cells, myocytes and neural cells to use them in the future, should you need them.

This is a normal cell. This is a cancer cell.

The observation that stem cells, as master cells, could give rise to a whole variety of different cell types heart cells, liver cells, pancreatic islet cells captured the attention of the media and the imagination of the public.

We then take the cells, the vascular cells, blood vessel cells, we perfuse the vascular tree with the patient's own cells.

There's a class of cells, a fairly small cell, an inhibitory cell, that quiets its neighbors.

We're made of cells and stuff between cells.

Now, we actually play through many generations here, at the cellular scale.

An analysis of this respirocyte, designed by Rob Freitas, indicates if you replace 10 percent of your red blood cells with these robotic versions, you could do an Olympic sprint for 15 minutes without taking a breath.

In effect, the cancer cell was forgetting it was cancer and becoming a normal cell.

Fat derived stem cells are adult stem cells.

Cells?

This is just a collection of pathways in the cell.

And out in the cytoplasmic soup we have special proteins that are required for cell division that float freely in this soup in three dimensions.

But adult stem cells are not embryonic stem cells.

These are support cells astrocytes glia.

We then grow the cells outside the body, take the scaffold, coat the scaffold with the cells the patient's own cells, two different cell types.

Or we can use cells alone, either your very own cells or different stem cell populations.

Liver cells, nerve cells, pancreatic cells we still can't grow them even today.

My body's an accumulation of ideas too the idea of skin cells, the idea of brain cells, the idea of liver cells.

And the other part is on the inside where it sends signals into the cell.

A windpipe cell already knows it's a windpipe cell.

They discovered that adult cells, taken from you and me, could be reprogrammed back into embryonic like cells, which they termed IPS cells, or induced pluripotent stem cells.

In order to preserve the human species, it would be preferable surely to use gene therapy with caution, restricting it to somatic cells (body cells excluding germ cells), to the exclusion of germ cells (i.e. the cells used for sexual reproduction).

We thought that maybe nitric oxide affected cell death, and how cells survive, and their resistance to other things.

The immune cells developed into the tolerance promoting cells.

So you may not only have car cells, you may have Aston Martin cells.

And place cells also get this kind of path integration input from a kind of cell called a grid cell.

And at that time, stem cell research had gained momentum, following the isolation of the world's first human embryonic stem cells in the 1990s.

So, 10 times more bacterial cells than human cells on a human being.

And what MyoD essentially does is, it causes cells to differentiate into muscle cells. So this compound, MyoD, has been tested on a lot of different cell types and been shown to actually convert this variety of cell types into skeletal muscle cells.

But she also found osteocytes, which are the cells that laid down the bones.

So I've studied a lot about stem cells embryonic stem cells are particularly powerful.

And in our lab, we are focused on taking fat and reprogramming mounds of fat into fountains of youthful cells cells that we may use to then form other, more specialized, cells, which one day may be used as cell transplants.

And they will either enter into this so called cellular suicide, programmed cell death, or they will form unhealthy daughter cells and enter into apoptosis once they have divided.

Watch when these two large protocells, the hybrid ones, fuse together.

In this simulation, each black dot is one nerve cell.

Memory B cells turn into plasma cells, which produce wave after wave of the specific antibodies that latch onto HIV to prevent it from infecting cells, while squadrons of killer T cells seek out and destroy cells that are already HIV infected.