Coloured scanning electron micrograph (SEM) of a human red blood cell (erythrocyte, red) and a white blood cell (leucoocyte, blue). — Stock photos

"Coloured scanning electron micrograph (SEM) of a human red blood cell (erythrocyte, red) and a white blood cell (leucoocyte, blue)." is an authentic stock image by ScienceRF. It’s available in the following resolutions: 1600 x 1215px, 2600 x 1975px, 4981 x 3783px. The minimum price for an image is 49$. Image in the highest quality is 4981 x 3783px, 300 dpi, and costs 449$.