what are the limitations for a stem cell?

Answer 1

Nothing comes without limitations....

First, and most obviously, there are ethical considerations.

Secondly, assuming public acceptance, there is still a lot of research to be done before we can actually do all the things we hope to do with stem cells. We really don't know what controls the differentiation process for all the different types of tissue in your body. In theory, with only 25,000 genes to look at we should be able to figure it out eventually, but it's not as simple or as fast as it might sound.

Third, there is a difference between making differentiated cells of interest and making an actual organ. Even if we can control stem cells to make them turn into liver cells for example, we really don't know how to make them form into a liver.

Lastly, we have to figure out a way to get our directed stem cell products back into the body. Not to difficult in the case of transplantable organs, but we have a long way to go before we can create nerves in a petri dish and tie them into an existing nervous system.

There's probably other things I haven't thought of, but this is a start.

Answer 2

I think with further research there may be no limits in what we could achieve with this. The scientists has to be allowed to proceed with out having to look over their shoulders at religious groups wanting to shut them down.

Answer 3

there are no limitations,esp. for embrionic stem cell research.