Scientists discovered a way to convert the blood type A, B and AB to O which can be transfused to anyone. Bacterial enzymes are used to remove the A and B antigens from the surface of the red blood cells. The research is reported in the journal Nature Biotechnology.

According to a Reuters article, Japanese researchers at Nagoya University and others developed an Alzheimer's vaccine has shown to be effective in mice. Small scale human trials is hoped to start this year.