Red blood cells. Coloured scanning electron micrograph (SEM) of red blood cells (RBCs, erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells — Stock photos

"Red blood cells. Coloured scanning electron micrograph (SEM) of red blood cells (RBCs, erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells" is an authentic stock image by ScienceRF. It’s available in the following resolutions: 1600 x 969px, 2600 x 1575px, 5715 x 3462px. The minimum price for an image is 49$. Image in the highest quality is 5715 x 3462px, 300 dpi, and costs 449$.