Examlex
How many different alleles for ABO blood types in the total human population exist?
Immune System
The body's defense mechanism against infectious organisms and other invaders through a combination of physical barriers, cells, and proteins.
Lymph Nodes
Small, bean-shaped structures that are part of the lymphatic system and function as filters for harmful substances.
Diathesis-Stress Model
A psychological theory that suggests mental disorders develop due to a predispositional vulnerability together with stress from life experiences.
Specific Immunity
The immune system's targeted response to particular pathogens or foreign substances, involving recognition of specific antigens and memory of previous encounters.
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