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Collage of a hand holding a microscope with virus illustrations against white grid background. Science, research, and virus study. Microscope and virus in a creative design.
Human blood under a microscope. You can see erythrocytes - red blood cells. The red color is given to them by the ferrous atom of iron, which is able to bind oxygen.
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The scientist holds a petri dish in front of him with colonies of yeast bacteria, next to a large microscope, to study the bacteria under a microscope magnification.

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