Blood group test preparations. Footage of a medical worker handling blood samples in a laboratory as part of preparations for blood group testing. He is pipetting the samples onto a spot plate (or reaction plate). He will then add antibody serums. There are four human blood types (groups): A, B, AB and O. The antibody serums will react with the antigens in the blood, with the resulting appearance of the blood used to identify the blood group. For a sequence showing the blood group testing, see clips K006/5135, K006/5130, K006/5137, K006/5161, K006/5185, K006/5132, and K006/5192. |