Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.
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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.
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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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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.
An example of modification of a structure for a new function
Structure of a chloroplast
Types of changes in chromosome structure
Structure of a typical plant cell
Structure of a myofiber (muscle cell)
Structure of the bacterial flagellar motor from Salmonella enterica