Many scientists are now researching special types of cells called stem cells. Stem cells are very important and have the potential to cure many diseases; however there are also many issues to consider when using stem cells. Stem cells research has created concern for some in the community, national and international.beacause the best source of stem cells is growing human embryo. The dilemma is that the growing embryo is the earliest stage of human life extracting the stem cells destroys the embryo and so a potential life is ended.
What is a stem cell? A stem cell is special cell in the earliest stages of human life stem cells can divide to produce all the different specialised cells of the body. After birth as we grow the number of stem cells in our bodies decreases. The stem cells left in adults can usually only grows into certain types of cells. Adult stem cells only repair injuries to damaged tissue or broken bones as adult bodies have finished growing. The single fertilised egg in no way resembles a human but contained in the nucleus is all the information on how to build all the different types of specialised cells. These cells make up the tissues of specialised cells. These cells make up the tissues and organs that will allow the baby to live and grow. Embryonic stem cells are taken from the inside of the blastocyst. Researchers think that there is a potential to collect embryonic stem cells and grow them into any form of specialised cell.
The future
Unfortunately it appears that when born or shortly after humans lose the last of the stem cells that are capable of growing into new nerve cells. This is why human cannot repair damage to the brain or spinal cord .it is because embryonic stem cells can grow into so many different tissues, including nerves’ that many scientists and members of the community strongly support further research .scientists working on mice have already shown that a cut spinal cord