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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Rodents Show Empathy-Driven Behavior Rodents Show Empathy-Driven Behavior
Four approaches to studying the evolution of human behavior. Four approaches to studying the evolution of human behavior.
The relative influence of heredity and the environment in human behavior has fascinated and plagued ... The relative influence of heredity and the environment in human behavior has fascinated and plagued ...
Children with insecure attachments may show angry behavior with peers, which can lead to peer ... Children with insecure attachments may show angry behavior with peers, which can lead to peer ...
The activity recorded by PET scans during the performance of newly learned and well-practiced ... The activity recorded by PET scans during the performance of newly learned and well-practiced ...
The behavior of the components during the triplet-binding assay The behavior of the components during the triplet-binding assay
Video: Introduction to Diabetes

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