TYPE ALL With engineering, a natural enzyme can better cut off some sugars that determine if a blood cell is type A, B or AB (as shown), resulting in a generic blood type that is safe for all people.
D.H. Kwan et al/Journal of the American Chemical Society 2015
NO GAIN Patients with an inherited form of blindness experienced temporary gains in vision after receiving gene therapy. But the retina of one person shows that nearly six years after the treatment, vision cells died in the treated area (outlined upper left corner; cooler colors signify cell death) and in the rest of the retina.
S.G. Jacobson et al/NEJM 2015
BRAIN ZAP After radiation exposure, mouse dendrites (green) in the medial prefrontal cortex were shorter and branched less than those of mice not exposed to radiation, as seen in this digital reconstruction. Exposed dendrites also had fewer docking sites (red) that detect messages from other cells.