Posts Tagged ‘Myth’

From www.athenweb.org : Scientists of today are breathing life into one of the myths of the past, human regeneration. At the root of this potential for regeneration are cells, known as stem cells. Stem Cells To understand what a stem cell is, and as to why we apply a certain definition to say that a given cell is a stem cell, we need to understand what the function of a stem cell is. A stem cell is above all a cell. And one of the major functions of every cell is to divide and give rise to two twin daughter cells, which will each in turn give rise to two daughter cells. As soon as the egg is formed by the fusion of an ovule and a sperm, it rushes to divide again and again… until the embryo resembles a little blackberry composed of eight stem cells which are highly potent : each of them could in theory give rise to a full embryo, a foetus and finally a baby. Then around the fourth day, the dividing stem cells begin to specialise. They give rise to two types of cell : in the centre, a small internal mass will eventually become the future foetus, and at the periphery, the cells that will go on to form the placenta… The cells of the internal mass are called embryonic stem cells. If we take cells from the internal mass, we find that every one of them has the potential, on dividing, either to form cells identical to themselves which can be grown to large quantities in culture, or alternatively, to form muscle, cartilage, neurons, blood and other tissues. As the embryo …
Video Rating: 5 / 5

From www.athenaweb.org : Scientists of today are breathing life into one of the myths of the past, human regeneration. At the root of this potential for regeneration are cells, known as stem cells. Stem Cells To understand what a stem cell is, and as to why we apply a certain definition to say that a given cell is a stem cell, we need to understand what the function of a stem cell is. A stem cell is above all a cell. And one of the major functions of every cell is to divide and give rise to two twin daughter cells, which will each in turn give rise to two daughter cells. As soon as the egg is formed by the fusion of an ovule and a sperm, it rushes to divide again and again… until the embryo resembles a little blackberry composed of eight stem cells which are highly potent : each of them could in theory give rise to a full embryo, a foetus and finally a baby. Then around the fourth day, the dividing stem cells begin to specialise. They give rise to two types of cell : in the centre, a small internal mass will eventually become the future foetus, and at the periphery, the cells that will go on to form the placenta… The cells of the internal mass are called embryonic stem cells. If we take cells from the internal mass, we find that every one of them has the potential, on dividing, either to form cells identical to themselves which can be grown to large quantities in culture, or alternatively, to form muscle, cartilage, neurons, blood and other tissues. As the embryo …
Video Rating: 4 / 5

From www.athenaweb.org : Scientists of today are breathing life into one of the myths of the past, human regeneration. At the root of this potential for regeneration are cells, known as stem cells. Stem Cells To understand what a stem cell is, and as to why we apply a certain definition to say that a given cell is a stem cell, we need to understand what the function of a stem cell is. A stem cell is above all a cell. And one of the major functions of every cell is to divide and give rise to two twin daughter cells, which will each in turn give rise to two daughter cells. As soon as the egg is formed by the fusion of an ovule and a sperm, it rushes to divide again and again… until the embryo resembles a little blackberry composed of eight stem cells which are highly potent : each of them could in theory give rise to a full embryo, a foetus and finally a baby. Then around the fourth day, the dividing stem cells begin to specialise. They give rise to two types of cell : in the centre, a small internal mass will eventually become the future foetus, and at the periphery, the cells that will go on to form the placenta… The cells of the internal mass are called embryonic stem cells. If we take cells from the internal mass, we find that every one of them has the potential, on dividing, either to form cells identical to themselves which can be grown to large quantities in culture, or alternatively, to form muscle, cartilage, neurons, blood and other tissues. As the embryo …