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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Palade's use of the pulse-chase method to study protein secretion Palade's use of the pulse-chase method to study protein secretion
Palade's use of the pulse-chase method to study protein secretion Palade's use of the pulse-chase method to study protein secretion
Body Part, Method of Examination, and Equipment Used During the General Physical Examination Cont. Body Part, Method of Examination, and Equipment Used During the General Physical Examination Cont.
Lineweaver–Burk plot for mixed inhibition kinetics Lineweaver–Burk plot for mixed inhibition kinetics
The ChIPSeq method screens for specific transcription factor binding sites across a whole genome The ChIPSeq method screens for specific transcription factor binding sites across a whole genome
linear programming problem, applying simplex method and sensitivity analysis linear programming problem, applying simplex method and sensitivity analysis
Video: Muscle cell structures - actin, myosin and titin filaments

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