Researchers aiming to understand why autism spectrum disorders (ASD) are more common in boys have discovered differences in a brain signaling pathway involved in reward learning and motivation that make male mice more vulnerable to an autism - causing genetic glitch.
They've been at it for a while, but scientists finally figured out how to delete disease - causinggenetic code from single - celled human embryos — without any glitches — that were able to grow into disease - free multicellular embryos.