Definition: A genetic condition where the body cannot break down a substance called phenylalanine, leading to serious health issues if not managed properly.

Example: Phenylketonuria requires strict dietary management to prevent serious health problems.

Definition: A chemical compound that is used in various scientific applications, particularly in genetic testing and research.

Example: Phenylthiourea is often used in studies related to taste perception.

Definition: A medication used to prevent seizures, especially in people with epilepsy.

Example: The doctor prescribed phenytoin to help control her seizures.

Definition: A medical procedure that involves removing blood from a person, separating its components, and returning some of them back to the body.

Example: During the pheresis procedure, the patient's blood is drawn and processed to collect specific components.

Definition: Relating to a chemical substance released by an animal that affects the behavior of others of the same species.

Example: The study focused on the pheromonal signals that influence mating behavior in insects.

Definition: A chemical released by an animal that affects the behavior or development of others in the same species, often used to attract mates.

Example: The female moth releases a pheromone to attract male moths from a distance.

Definition: The 21st letter in the Greek alphabet, often used in mathematics and science to represent various concepts.

Example: In geometry, phi is often used to represent the golden ratio.

Definition: A small container, often made of glass, used for holding liquids, especially in laboratories or for medicines.

Example: The scientist carefully poured the solution into the phial for testing.

Definition: A medical condition where the foreskin cannot be easily pulled back from the head of the penis.

Example: The doctor explained that phimosis can sometimes cause discomfort during urination.

Definition: A medical condition where a vein becomes swollen and inflamed, often causing pain and discomfort.

Example: The doctor diagnosed her with phlebitis after she complained of pain in her leg.