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Title: Cellular capillary gas exchange, illustration
Caption: Medical illustration of a wall of cells next to a capillary bed, illustrating the movement, or gas exchange, across specialized respiratory surfaces. Arrows illustrate oxygenated and deoxygenated blood moving through cellular walls.
Credit: Album / Science Source / Catherine Twomey
Image size: 2639 × 3300 px | 24.9 MB
Print size: 22.3 × 27.9 cm | 1039.0 × 1299.2 in (300 dpi)