Is steroid treatment for miscarriage safe?
By Rowan Hooper A STEROID may prevent repeated miscarriages, says a researcher who has shown the chemical can reduce the number of “killer cells” accused of causing miscarriages. But other experts say clinical trials to explore this would be too risky, not least because no one knows for sure what the cells do. The controversy revolves around a type of immune cell with an evocative name: natural killer cells. Although the function of NK cells remains uncertain, there is some evidence that they assist the implantation of embryos in the womb. However,