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Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

one month old embryo one month old embryo
The human embryo The human embryo
Leonardo da Vinci, Embryo in the Womb. Leonardo da Vinci, Embryo in the Womb.
Select the changes in the embryo that indicate that a blastocyst has formed. 3 options: t Select the changes in the embryo that indicate that a blastocyst has formed. 3 options: t
A single cell from an early-stage human embryo A single cell from an early-stage human embryo
Visualization of gap gene expression in a Drosophila embryo Visualization of gap gene expression in a Drosophila embryo
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