Normal human alveoli — Stock photos

"Normal human alveoli" is an authentic stock image by ScienceRF. It’s available in the following resolutions: 1600 x 1600px, 2600 x 2600px, 4500 x 4500px. The minimum price for an image is 49$. Image in the highest quality is 4500 x 4500px, 300 dpi, and costs 449$.