Scientists working at the Third Military Medical University in Chongqing, China have developed a technology to quickly identify a blood sample’s blood type. It relies on using antibodies that target A and B antigens that give blood its type, and a dye that is activated when the antibodies are in attack mode. The same was done for the D antigen, which gives the plus or minus to the blood type.
The sample is placed on a plate with a combination of antibody and dye, and the color of the plate changes depending on if a reaction is occurring. It stays brown if nothing is happening.
