Stem cells can come from various sources. However, these sources usually dictate what type of stem cells a doctor or scientist will be dealing with. There are many different types of stem cells, but stem cells, in general, are placed in major groups. This usually based on their ability to become any type of cell they need to be or if they don’t have this ability. One of the more popular and coveted types of stem cells are embryonic stem cells. This is because they have the innate ability to become any type of cell they need to be when introduced into any given environment. Further, they don’t need a human environment to grow and can be multiplied and enhanced in a dish in a lab. However, even though embryonic stem cells sound like a miracle, they have a few limitations or setbacks.

Ethical Issues

Many people feel that the use of these specific stem cells has some underlying ethical issues. This often means that it’s much harder for scientists and researchers to have access to these types of stem cells. This is because embryonic stem cells come from a fertilized egg when it’s about 3-5 days old. The only way to harvest these is to completely destroy the embryo in the process. These embryos are often created in a lab in a dish and then harvested when they’re ready. Embryonic stem cells are extremely useful in healing various ailments and their complete use is still being discovered and furthered as research continues.

Tumor Formation

Although there has been a lot of research into embryonic stem cells, there are still some inconsistencies in their use. One of these is the growth of tumors at the site of injection. Since stem cells are naturally programmed to keep creating cells, if they don’t end up locating and repairing the issue near the injection site, they can potentially “build” fleshy tumors instead. They can also build random formations of new flesh. Depending on where these are located in the body, it can either cause more harm or not cause any harm at all. This is why a patient is closely monitored once stem cell therapy or treatments begin.

Cell Types

Although embryonic stem cells are known for being able to replicate any cell type, there can be hiccups when it involves more sophisticated cell types. Mainly when this process is encouraged in a lab. Due to this issue, many doctors are still hesitating at using embryonic stem cells for more sophisticated problems. This is because they can be too unstable to rely on fully when it comes to more difficult cell types.

There is still a large amount of research to go concerning embryonic stem cells. There are a few hurdles standing in the way in order for these little miracles to be used to their fullest extent. However, researchers hold out hope that, with time, they will overcome these hurdles and then some in order to benefit mankind.