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Blood is a body fluid in the circulatory system ... (SEM) image of a normal red blood cell ... were based upon the observation of blood clotting in a transparent ...
The aqueous humour is a transparent water-like fluid similar to blood plasma, but containing low protein concentrations.It is secreted from the ciliary body, a structure supporting the lens of the eyeball. [1]
Blood plasma is a light amber-colored liquid component of blood in which blood cells are absent, ... Plasma is normally relatively transparent, but sometimes it can ...
Media in category "Images that should have transparent backgrounds" The following 105 files are in this category, out of 105 total. 111th Battle For The Bell.jpeg 370 × 208; 33 KB
Floaters are, in fact, visible only because they do not remain perfectly fixed within the eye. Although the blood vessels of the eye also obstruct light, they are invisible under normal circumstances because they are fixed in location relative to the retina, and the brain "tunes out" stabilized images through neural adaptation. [3]
Blood serum and blood plasma are similar, but serum does not contain any clotting factors such as fibrinogen, prothrombin, thromboplastin and many others. Serum includes all proteins not used in coagulation (clotting) and all the electrolytes , antibodies , antigens , hormones and any exogenous substances, such as drugs and microorganisms .
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