Natasha Mitchell
speaker
24,986 appearances
297 recordings
2 series
first heard Jul 2005
last heard Jul 2018
Natasha Mitchell’s voice in public audio — every appearance, attributed to the second.
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Appearances
Remind us where the word chamira originally comes from.
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with a lion's head, the middle of a goat and the tail of a snake perhaps.
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Indeed.
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Let's clarify then in scientific parlance today what defines a creature as a chimera.
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Right.
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So it's not genetic manipulation as such, it's just swapping some cells for other cells from another species.
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say at the embryo stage you take cells say from a human and place it in, well, for example, a monkey embryo.
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Certainly this transferring of cells and crossing the boundaries between species, even though it sounds like science fiction, it's been part of science and biology for for many, many decades.
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Bioethicist Jason Scott Robert and so to the twenty first century where stem cell science has come of age.
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In 1998, Professor John Gerhardt's team at Johns Hopkins University was one of the first two to isolate and cultivate human embryonic stem cells, a landmark in stem cell research.
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He argues there's a strong scientific rationale for creating chimeras by transplanting human cells into other living animals, and that is to understand and test.
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Test the therapeutic potential of human stem cells.
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With the complicating factor that how stem cells behave depends on
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what sort of stem cells they are, what animal they've come from, what animal they're going to, what micro environment they find themselves in.
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It's a very complex picture that you can make no predictions about.
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Well, from a world leader in stem cell science to another, this time in neuroscience.
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Professor Peter Schofield is Executive Director of the Prince of Wales Medical Research Institute in Sydney.
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He was on the Lockhart Committee, which reviewed Australia's legislation on human cloning and research involving human embryos.
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They concluded that human stem cells should not be employed.
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Adult animals, though, are considered okay.
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Showing 741–760 of 24,986 · page 38 of 1250
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