Animal Study

Meaning of Animal Study

A laboratory experiment using animals to study the development and progression of diseases. Animal studies also test how safe and effective …

Animal-Assisted Therapy 

Meaning of Animal-Assisted Therapy

A type of therapy that uses dogs or other pets to improve the physical and mental health of patients with certain …

Aniridia

Meaning of Aniridia

A disorder in which a person is born without part or all of the iris (colored tissue at the front of the …

ANLL

Meaning of ANLL

An aggressive (fast-growing) disease in which too many myeloblasts (immature white blood cells that are not lymphoblasts) are found in the bone …

Anorexia

Meaning of Anorexia

An abnormal loss of the appetite for food. Anorexia can be caused by cancer, AIDS, a mental disorder (i.e., anorexia nervosa), or …

Antenatal

Meaning of Antenatal

Having to do with the time a female is pregnant, before birth occurs. Also called prenatal.…

Anterior

Meaning of Anterior

In human anatomy, has to do with the front of a structure, or a structure found toward the front of the body.…

Anterior Mediastinotomy 

Meaning of Anterior Mediastinotomy

A procedure in which a tube is inserted into the chest to view the tissues and organs in the area between …

Anterior Mediastinum 

Meaning of Anterior Mediastinum

The area in the front part of the chest between the lungs. Also called prevascular space.…

Anterior Pelvic Exenteration

Meaning of Anterior Pelvic Exenteration

Surgery to remove the urethra, lower part of the ureters, uterus, cervix, vagina, and bladder.…

Annamycin

Meaning of Annamycin

A substance that is being studied in the treatment of cancer. It belongs to the family of drugs called anthracycline antibiotics.…

Antagonist

Meaning of Antagonist

In medicine, a substance that stops the action or effect of another substance. For example, a drug that blocks the stimulating effect …

Anorexia Nervosa 

Meaning of Anorexia nervosa

An eating disorder marked by an intense fear of gaining weight, a refusal to maintain a healthy weight, and a distorted …

Ansamycin

Meaning of Ansamycin

An anticancer drug that belongs to the family of drugs called antineoplastic antibiotics.…

ANS

Meaning of ANS

The part of the nervous system that controls muscles of internal organs (such as the heart, blood vessels, lungs, stomach, and intestines) …

Anterior Urethral Cancer

Meaning of Anterior Urethral Cancer

A disease in which malignant (cancer) cells are found in the part of the urethra (the tube through which urine …

Anthracenedione 

Meaning of Anthracenedione

An anticancer drug that belongs to the family of drugs called anticancer antibiotics.…

Anthracycline

Meaning of Anthracycline

A type of antibiotic that comes from certain types of Streptomyces bacteria. Anthracyclines are used to treat many types of cancer. Anthracyclines …

Anthraquinone

Meaning of Anthraquinone

A type of anticancer drug.…

Antiandrogen

Meaning of Antiandrogen

A substance that keeps androgens (male sex hormones) from binding to proteins called androgen receptors, which are found in normal prostate cells, …