Public domain photos

The image shows a close up of a white object on a black background with the text "USNM E0077158" at the top and bottom. It appears to be a micrograph of a plant cell, with the size of the cell clearly visible.

The image shows a close up of a white object on a black background with the text "USNM E0077158" at the top and bottom. It appears to be a micrograph of a plant cell, with the size of the cell clearly visible.Open in library