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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.

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Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

A visually impaired patient is assisted by a service dog. A visually impaired patient is assisted by a service dog.
Bank teller assisting with customer service. Bank teller assisting with customer service.
A physical therapist exercising the patient’s leg in a physical therapy department. A physical therapist exercising the patient’s leg in a physical therapy department.
The legacy of Confucian thought continued for centuries in the form of civil service examinations ... The legacy of Confucian thought continued for centuries in the form of civil service examinations ...
Linesman’s pliers are very useful because they can help perform many automotive service jobs. Linesman’s pliers are very useful because they can help perform many automotive service jobs.
Step 8 is very important. Be sure that the customer’s concern has been corrected. Step 8 is very important. Be sure that the customer’s concern has been corrected.
Video: Energy sources - types

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