79K views · 1.2K reactions | A crucial piece of evidence from Leah's apartment, her slip, yields a significant breakthrough. Lab tests confirm the presence of semen stains, leading to blood type determination using the ABO system. This discovery brings them closer to identifying the assailant. Have you heard of the ABO system? #forensics #bloodtypes #evidence #investigation #crime | Real Crime | Facebook

222K views · 2.2K reactions | Blood typing is the process of...

3.1K views · 833 reactions |  Calling all A and B blood donors! There's a high demand for your type, and every donation has the power to save lives. As a thank you, all donors who join us at a donor center before 10/31 will snag a $10 e-gift card for a whole blood donation. Registration is required ➡️ | New York Blood Center | Facebook

22K views · 2.4K reactions | What's your type? We currently need more O negative and B negative donors to make sure we have enough blood stocks over Christmas. If you have one of these in demand blood types, donate without an appointment at many of our permanent donor centres. Your donation could save lives. | NHS Blood Donation | Facebook

134K views · 1.8K reactions | 喝Rh Factor in Pregnancy → Blood type...