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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.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
The longest a person has survived after a heart transplant is 24 years.
Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

