Examlex
When transforming a weak entity, one should create one relation with both the attributes of the strong entity and the attributes of the weak entity.
Microbiologic Specimen
A sample of bodily fluid or tissue that is taken for laboratory analysis to check for the presence of microorganisms.
Immune System
The complex network of cells, tissues, organs, and the substances they produce that helps the body fight infections and other diseases.
AIDS
Acquired Immunodeficiency Syndrome, a chronic, potentially life-threatening condition caused by the human immunodeficiency virus (HIV), which damages the immune system and impairs the ability to fight off organisms that cause disease.
HIV
Human Immunodeficiency Virus, a virus that attacks the immune system and can lead to acquired immunodeficiency syndrome (AIDS) if not treated.
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