Sign up for an Award
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
The patient requires blood transfusion at the time of badly hert. But we can't know the blood type at once. This cotton applicator could test patients' blood type when we use it. The cotton ball's color will change when touching the blood. There is a blood-color matching graph on the stick. We can identify the blood type according to matching the color between the cotton ball and the graph.
Tang Zhichuan, Zhu Pengfei, Guan Hongyue, Kong Ying