Public domain photos

The image shows a close up of a microscope image of a cell with a ruler in the background, and in the center of the image there are three circular objects, which appear to be protozoa. At the bottom of the picture, there is some text.

The image shows a close up of a microscope image of a cell with a ruler in the background, and in the center of the image there are three circular objects, which appear to be protozoa. At the bottom of the picture, there is some text.Open in library