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Structure and function of the gills of a bony fish.

Structure and function of the gills of a bony fish.
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Description: Oxygen flow from water into a capillary. Percentages indicate the degree of oxygenation of water (blue) and blood (red). All along the capillary, oxygen flows down its concentration gradient from water into blood.
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Filesize: 119.87kB
Height: 731 Width: 1500
Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=47477
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