There are many different uses for stem cells, and different stem cells which can do things other stem cells can and can do. There are two main stem cells, and they the embryonic stem cells, and adult stem cells. However there ae about another dozen more stem cells which are also important to the human body. These other stem cells are tissue stem cells, blood stem cells, skin stem cells, Mesenchymal stem cells, stem cells in the eye, induced plum stem cells, brain stem cells, bone marrow stem cells, and also liver stem cells. All of these stem cells are useful to the human being because stem cells can either keep us alive our dead. All of these are different, and can be a little similar. The embryonic stem cells …show more content…
Adult stem cells are undifferentiated cells found throughout the body that divide to replenish dying cells and regenerate damaged tissues. Tissue stem cells can also b referred to as somatic, or adult stem cells. Blood stem cells are also known as hematopoietic stem cells because they are derived from mesoderm and located in the red bone marrow, which is contained in the core of most bones. Skin stem cells are extremely important tissue in our bodies, since it protects us from infection, dehydration, allows us to feel pressure, and fell temperature. Mesenchymal stem cells are multipotent stromal cells that can differentiate into a variety of cell types including bone cells, cartilage cells, muscle cells, and fat cells. Stem cells in your eye are extremely important to many people because once they start to get destroyed, most likely you will not be able to see. Pluripotent stem cells, both embryonic stem cells and induced pluripotent stem cells are undifferentiated cells that can form again. Many of the stem cells are able to manipulate to form the same cell. These are many uses for different stem …show more content…
In 1868, a German biologist named Ernst Haeckel uses the phrase stem cell to describe the fertilized egg that becomes an organism, and also to describe the single-celled organism that acted as the ancestor cell to all living things in history. Attempts were made to fertilize mammalian eggs outside of the human body and in the early 1900s, it was discovered that some cells had the ability to generate blood cells. For example, on June 1, 1901, at the Berlin Hematological Society, Alex Maximow lectured about all blood cells come from the same ancestor. Which means blood stem cells that are multi-potent, or have the ability to differentiate into several types of cells. One of the first pieces of evidence of blood stem cells was on February 2, 1963, Ernest McCulloch and James Till (Canadian scientists) perform experiments on the bone marrow of the mice and observe that different blood cells come from a special class of cells. In 1968, Robert A. Good performs the first successful bone marrow transplant on a child patient suffering from an immune deficiency that killed others in his family. The boy received bone marrow from his sister, and he grew into healthy adulthood. In 1978, stem cells were discovered in human cord blood. In 1981, the first in vitro stem cell line developed from mice. In 1988, embryonic stem cell lines created