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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

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The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

The control of breathing via respiratory centres in the mammalian brain. The control of breathing via respiratory centres in the mammalian brain.
(a) In a healthy eye, aqueous humor is formed in the ciliary process and drains through the canal of ... (a) In a healthy eye, aqueous humor is formed in the ciliary process and drains through the canal of ...
Systems and Organs of the Human Body Systems and Organs of the Human Body
How human body works to metabolize alcohol How human body works to metabolize alcohol
A wide variety of pathogens may live on or in the human body A wide variety of pathogens may live on or in the human body
Mosaic X Chromosome Expression in Human Females Mosaic X Chromosome Expression in Human Females
Video: Adolescent Diabetes

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