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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.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.
The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
![A histologic slide showing the sponge-like architecture of a patient with Creutzfeldt-Jakob Disease.](https://biology-forums.com/gallery/29/medium_548020_11_05_17_3_50_42_29047222.jpeg)
![Place one hand on the medial and one on the lateral thigh to begin horizontal stroking. Slide hands ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_12_54_27_330631854.jpeg)