Free Biology Videos and Movies
This lecture by Dr. Nadia Rosenthal discusses the importance of adult stem cells in the tissue maintenance, development and regeneration. Part 3 of 6. HHMI description: Mature organisms have stem cells of various sorts, called adult stem cells. Adult stem cells supply cells that compensate for the loss of cells from normal cell death and turnover, such as the ever-dying cells of our skin, our blood, and the lining of our gut. They are also an essential source of cells for healing and regeneration in response to injury. Some animals, such as sea stars, newts, and flatworms, are capable of dramatic feats of regeneration, producing replacement limbs, eyes, or most of a body. It is an evolutionary puzzle why mammals have more limited powers of regeneration. Researchers are interested in pinpointing where adult stem cells reside and in understanding how flexible adult stem cells are in their ability to produce divergent cells such as muscle and red blood cells. Understanding the sources and the rules for the differentiation of adult stem cells is essential for tapping their therapeutic potential. Since consenting adults can provide adult stem cells, some people think that adult stem cells may be a less controversial area of Research than embryonic stem cells.Date: 2008-09-03 23:50:28 - Added by: ebiotek
 | Animal Cloning |
| Animal cloning gone bad, waaaay bad Check out our website: www.KnGproduction.com | |
| Date: 2008-09-03 23:58:32 - Added by: ebiotek | |
 | How to Clone a Sheep |
| If you\'ve ever wondered how to clone a sheep, this simple step-by-step demonstration is just what you\'ve been looking for. Ten simple steps is all it takes to go from egg cell to infant sheep clone. DO NOT ATTEMPT AT HOME. | |
| Date: 2008-09-03 23:57:25 - Added by: ebiotek | |
 | Cloning |
| cloning video i made for class my junior year of high school | |
| Date: 2008-09-03 23:56:41 - Added by: ebiotek | |
 | biology - nuclear transfer (clone creating) |
| Nuclear Transfer is a form of cloning. The steps involve removing the DNA from an oocyte and while(unfertilized egg), and injecting the nucleus which contains the DNA to be cloned. In rare instances, the newly constructed cell will divide normally, replicating the new DNA while remaining in a pluripotent state. If the cloned cells are placed in the uterus of a female mammal, a cloned organism develops to term in rare instances. This is how Dolly the Sheep and many other species were cloned. Alternatively, if cells are extracted from the cloned cells during very early embryonic stages (blastocyst or morula), embryonic stem cells can be created. These cells can be grown in laboratories indefinitely and can theoretically be made into any of the 200+ cell types in the mammalian body, and thus are an extraordinary tool for biologists as well as a therapeutic agent with the potential to treat currently untreatable medical conditions. | |
| Date: 2008-09-03 23:55:55 - Added by: ebiotek | |
 | Stem Cells and Human Cloning |
| Dr Andrew Corbett presents the Stem Cell and Human Cloning Debate from an ethical perspective... | |
| Date: 2008-09-03 23:55:27 - Added by: ebiotek | |
 | What's the difference between embyonic and adult stem cells? |
| A 10 minute discussion on the difference between embryonic and adult stem cells. Focus is on the use of mesenchymal stem cells. | |
| Date: 2008-09-03 23:54:29 - Added by: ebiotek | |
 | Adult Stem Cells and Regeneration Part 3 of 6 |
 | Adult Stem Cells and Regeneration Part 2 of 6 |
| This lecture by Dr. Nadia Rosenthal discusses the importance of adult stem cells in the tissue maintenance, development and regeneration. Part 2 of 6. HHMI description: Mature organisms have stem cells of various sorts, called adult stem cells. Adult stem cells supply cells that compensate for the loss of cells from normal cell death and turnover, such as the ever-dying cells of our skin, our blood, and the lining of our gut. They are also an essential source of cells for healing and regeneration in response to injury. Some animals, such as sea stars, newts, and flatworms, are capable of dramatic feats of regeneration, producing replacement limbs, eyes, or most of a body. It is an evolutionary puzzle why mammals have more limited powers of regeneration. Researchers are interested in pinpointing where adult stem cells reside and in understanding how flexible adult stem cells are in their ability to produce divergent cells such as muscle and red blood cells. Understanding the sources and the rules for the differentiation of adult stem cells is essential for tapping their therapeutic potential. Since consenting adults can provide adult stem cells, some people think that adult stem cells may be a less controversial area of research than embryonic stem cells. | |
| Date: 2008-09-03 23:50:10 - Added by: ebiotek | |
 | Adult Stem Cells and Regeneration Part 1 of 6 |
| This lecture by Dr. Nadia Rosenthal discusses the importance of adult stem cells in the tissue maintenance, development and regeneration. Part 1 of 6. HHMI description: Mature organisms have stem cells of various sorts, called adult stem cells. Adult stem cells supply cells that compensate for the loss of cells from normal cell death and turnover, such as the ever-dying cells of our skin, our blood, and the lining of our gut. They are also an essential source of cells for healing and regeneration in response to injury. Some animals, such as sea stars, newts, and flatworms, are capable of dramatic feats of regeneration, producing replacement limbs, eyes, or most of a body. It is an evolutionary puzzle why mammals have more limited powers of regeneration. Researchers are interested in pinpointing where adult stem cells reside and in understanding how flexible adult stem cells are in their ability to produce divergent cells such as muscle and red blood cells. Understanding the sources and the rules for the differentiation of adult stem cells is essential for tapping their therapeutic potential. Since consenting adults can provide adult stem cells, some people think that adult stem cells may be a less controversial area of research than embryonic stem cells. | |
| Date: 2008-09-03 23:49:50 - Added by: ebiotek | |
 | Adult Stem Cells and Regeneration Part 6 of 6 |
| This lecture by Dr. Nadia Rosenthal discusses the importance of adult stem cells in the tissue maintenance, development and regeneration. Part 6 of 6. HHMI description: Mature organisms have stem cells of various sorts, called adult stem cells. Adult stem cells supply cells that compensate for the loss of cells from normal cell death and turnover, such as the ever-dying cells of our skin, our blood, and the lining of our gut. They are also an essential source of cells for healing and regeneration in response to injury. Some animals, such as sea stars, newts, and flatworms, are capable of dramatic feats of regeneration, producing replacement limbs, eyes, or most of a body. It is an evolutionary puzzle why mammals have more limited powers of regeneration. Researchers are interested in pinpointing where adult stem cells reside and in understanding how flexible adult stem cells are in their ability to produce divergent cells such as muscle and red blood cells. Understanding the sources and the rules for the differentiation of adult stem cells is essential for tapping their therapeutic potential. Since consenting adults can provide adult stem cells, some people think that adult stem cells may be a less controversial area of research than embryonic stem cells. | |
| Date: 2008-09-03 23:49:20 - Added by: ebiotek | |