A stem-cell-infused gel, fracture putty induces rapid bone healing by producing a protein essential to bone formation. And it does so very quickly. When treated with the gel, rats with fractured hind legs showed no evidence of injury in about two weeks.

Trials of the substance on larger animals have only just begun, but they seem promising. Tested in sheep, fracture putty sped the healing process, as well — though not quite as quickly.

Still, researchers are hopeful that further refinement will transform the substance into something that can be used to treat humans, especially injured soldiers.

“Complex fractures are a major cause of amputation of limbs for U.S. military men and women,” said stem-cell researcher Steve Stice. “For many young soldiers, their mental health becomes a real issue when they are confined to a bed for three to six months after an injury. This discovery may allow them to be up and moving as fast as days afterward.”

British lawmakers voted Monday to allow the use of human-animal embryos for research after an attempt to ban the technique was overwhelmingly rejected. At issue is a bill that permits scientists to blend human and animal DNA to make “chimeric” embryos from which stem cells can be extracted.

Scientists say the technique could aid the understanding of genetic defects and diseases like Parkinson’s and Alzheimer’s. But critics, who’ve taken a more hysterical view of the mingling of human and animal DNA, call it a monstrous attack on human rights, human dignity and human life. To them so-called “human-admixed embryos” recall the creatures of Marlon Brando’s fey, muumuu-wearing Dr. Moreau and his fantastical island.

Said MP Edward Leigh: “In embryos you do have the genetic makeup of a complete human being, and you cannot splice together a human and an animal. I’m not sure even my greatest political enemies would say that I was 30% a daffodil and 80% a mouse. I don’t believe in my soul or my brain I’m 80% a mouse or 30% a daffodil. But I do think that we are special and, therefore, as the human race is special, it is different from the animal race. And I think that we should take this very seriously.”

Thirty percent daffodil? Eighty percent mouse? Oh, you’re special all right, Leigh. Sure you read the right bill?

Anyway, as New Scientist’s Linda Geddes points out, this is all much ado about nothing. These “human-admixed embryos” aren’t really any more monstrous than you or I. “These embryos contain 99.9% human DNA, and 0.01% animal DNA,” writes Geddes. “Arguably I’m less than 99.9% human myself. Once you consider the billions of bacteria living in my gut and on my skin, the parasitic worms which may or may not be colonizing my intestines, and the fungi causing the itch between my toes, I’m a walking menagerie. In fact, some scientists have estimated that the total number of microbial genes in the human body outnumber human genes by up to 1,000 to 1.”

Researchers at the Oregon National Primate Research Center said this week that they had, for the first time, generated embryonic clones from a 10-year-old male rhesus macaque and then used those to produce colonies of embryonic stem cells. To achieve this, they injected the genetic material from a skin cell of an adult monkey into a monkey egg whose own DNA had been removed, extracting embryonic stem cells from the resulting early-stage embryo.

Quite an achievement and one that could speed advances in therapeutic cloning, if the techniques on which it’s based can be applied to human cells. “This opens doors to human embryonic cloning,” said Arthur Caplan, director of the Center for Bioethics at the University of Pennsylvania in Philadelphia. “Not the most efficient procedure but there it is, it opens that door. I’m not sure we knew before that people and primates were cloneable. But what works in monkeys will work in us.”

Researchers at the Oregon National Primate Research Center said this week that they had, for the first time, generated embryonic clones from a 10-year-old male rhesus macaque and then used those to produce colonies of embryonic stem cells. To achieve this, they injected the genetic material from a skin cell of an adult monkey into a monkey egg whose own DNA had been removed, extracting embryonic stem cells from the resulting early-stage embryo.

Quite an achievement and one that could speed advances in therapeutic cloning, if the techniques on which it’s based can be applied to human cells. “This opens doors to human embryonic cloning,” said Arthur Caplan, director of the Center for Bioethics at the University of Pennsylvania in Philadelphia. “Not the most efficient procedure but there it is, it opens that door. I’m not sure we knew before that people and primates were cloneable. But what works in monkeys will work in us.”