Blood cells through the microscope. This image is a combination of what can be seen through the microscope, and the artists impression of blood cells and surrounding structures and organisms.

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Credit

Blood cells through the microscope. This image is a combination of what can be seen through the microscope, and the artists impression of blood cells and surrounding structures and organisms. Odra Noel. Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). Source: Wellcome Collection.