Description: Segment 1 A scientist is shown holding a test tube of blood. He places it into a centrifuge in order to separate the plasma from the blood cells. Once the plasma is separated, it is heated to solify the proteins in the blood. The heat evaporates the water from the plasma, leaving salts. The result is shown in magnification. Next, the film looks at the structure of blood cells. Blood is taken from a man's finger and looked at under a microscope. The blood cells are shown. Another blood sample is stained, in order to clearly show the structure of the blood cells. Labels point out red blood cells, white blood cells and platelets. Time start: 00:00:00:00 Time end: 00:06:46:05 Length: 00:06:46:05 Segment 2 Red blood cells are looked at more closely, and some are shown in greater magnification. A demonstration and animation show the method for counting red blood cells to gain an indication of health in the patient. Next, haemoglobin is separated from red blood cells using ether. The haemoglobin is shown greatly magnified. White blood cells are examined next, and an animation shows the movement of a white blood cell from a capillary to body tissue. An animation shows a leukocyte or phagocyte devouring a foreign particle in the blood. Platelets, which assist in the process of clotting blood, are shown in magnification. An animation shows a test tube of blood clotting, as it is exposed to air. Time start: 00:06:46:05 Time end: 00:12:40:09 Length: 00:05:54:04