Stem Cell Research ? Developing a Cross between Species :: ethics stem cell research developing cross species idea chimera around since mythological creatures ancient greece such centaur man torso horses body griffin wings head claws eagle lion today due advances biotechnology seeing mythology become reality different respect human nonhuman animal chimeras being developed injecting blastocysts embryonic cells need injected right exploratory research papers stem cell research developing cross species

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Ethics of Stem Cell Research ? Developing a Cross between Species

The idea of a chimera, a cross between species, has been around since the mythological creatures of ancient Greece, such as the centaur (a man?s torso with a horses body) and the griffin (the wings, head, and claws of an eagle and the body of a lion). Today, due to our advances in biotechnology, we are seeing this mythology become a reality, but in a different respect. Human-nonhuman animal chimeras are being developed by injecting animal blastocysts with human embryonic stem cells. The cells need to be injected at the right point in development, after the body plan of the animal has formed and before the immune system develops. It is done at this time to avoid deforming the animal and so the fetus does not reject the cells. In some studies, the resulting animal embryo had a mixture of animal cells, human cells, and a hybrid of the two different types of cells. The hybrid cells contained both human and animal genes (Vince, 2004). These chimeric embryos have been developed in such animals as mice, pigs, rabbits, an... [to view the full essay now, purchase below]

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