Introduction: Blood Cells
Blood contains several different types of cells. Some cells, such as red blood cells, carry oxygen to other cells. Other types of cells, such as white blood cells or leukocytes, provide protection from foreign cells and infectious agents. Cell fragments called platelets provide protection against bleeding. The red blood cells of different animals can have different structures.

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Human granulocytes - phagocytosis, movie 2
Human white blood cells called granulocytes engulf yeast particles in a process called phagocytosis. Disk-shaped red blood cells are also visible. The 'spiky' red blood cells are an artifact of the slide preparation.

Elapsed time 3.5 minutes.
A drop of blood from a fingerprick was placed on a slide, diluted slightly with saline solution, then incubated at 37° Celsius for 30 minutes. Coagulated red blood cells were washed away with saline solution. A drop of saline with human serum was placed on the remaining cells, along with a silicon spacer and coverslip. The movie was taken on an inverted compound microscope at 37°C, 7% CO2 with a 64x DIC objective and digital camera.