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Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Water-conducting cells of the xylem. Water-conducting cells of the xylem.
Cells involved in specific immunity in vertebrates. Cells involved in specific immunity in vertebrates.
Different Types of Cells Different Types of Cells
Digestion converts whole foods into individual nutrients that can be used by the body’s cells Digestion converts whole foods into individual nutrients that can be used by the body’s cells
Experimental evidence that signals from dorsal lip cells initiate amphibian gastrulation. A dorsal l Experimental evidence that signals from dorsal lip cells initiate amphibian gastrulation. A dorsal l
Lineup of leukocytes (white blood cells) Lineup of leukocytes (white blood cells)
Video: Structures that affect circulation - arterioles and vasomotor responses and venous return

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