4.2 Specific Cellular Defence Flashcards Preview

Higher Human Biology Unit 4 > 4.2 Specific Cellular Defence > Flashcards

Flashcards in 4.2 Specific Cellular Defence Deck (12)
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1

Immune response to a usually harmless antigen

Allergy

2

Molecule that can produce an immune response in the body

Antigen

3

Cell that has been infected by pathogens and displays their antigen

Antigen-presenting cell

4

Abnormal immune response to self antigens on its surface

Autoimmunity

5

White blood cell with specific cell surface receptors, secretes antibodies into blood and lymph

B lymphocyte

6

Selection of lymphocytes to produce clones when exposed to specific antigens

Clonal selection theory

7

A group of genetically identical cells produced from one parent cell

Clone

8

Monitoring of the tissue for infection by white blood cells

Immune surveillance

9

Breakdown of cells

Lysis

10

Lymphocyte remaining in the body for many years after recovery from infection

Memory cell

11

A second exposure to the same infective agent

Secondary exposure

12

Type of white blood cell, some kill infected cells while others stimulate the immune response

T lymphocyte