Cells and Tissues of the Immune System

Question 1

Hematopoietic stem cell (HSC)

Answer 1

An undifferentiated stem cell in the fetal yolk sac or liver or in adult bone marrow that asymmetrically divides to give rise to additional stem cells and a cell that differentiates into one of multiple different lineages. A hematopoietic stem cell in the bone marrow will give rise to cells of the lymphoid, myeloid, and erythrocytic lineage.

Question 2

Myeloid cells

Answer 2

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Question 3

Lymphoid cells

Answer 3

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Question 4

Phagocyte

Answer 4

Cells, including neutrophils and macrophages, whose primary function is to ingest and destroy microbes and remove damaged tissues.

Question 5

Phagocytosis

Answer 5

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Question 6

Neutrophil

Answer 6

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Question 7

Basophil

Answer 7

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Question 8

Eosinophil

Answer 8

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Question 9

Granulocyte colony-stimulating factor (G-CSF)

Answer 9

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Question 10

Granulocyte-macrophage colon-stimulation factor (GM-CSF)

Answer 10

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Question 11

Polymorphonuclear phagocyte

Answer 11

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Question 12

Mononuclear phagocyte

Answer 12

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Question 13

Macrophage

Answer 13

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Question 14

Tissue-resident macrophage

Answer 14

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Question 15

Monocyte (or macrophage) colony-stimulating factor (M-CSF)

Answer 15

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Question 16

Classical/inflammatory monocytes

Answer 16

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Question 17

Nonclassical monocytes

Answer 17

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Question 18

Efferocytosis

Answer 18

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Question 19

Classical activation

Answer 19

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Question 20

Alternative activation

Answer 20

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Question 21

Mast cells

Answer 21

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Question 22

Basophils

Answer 22

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Question 23

Eosinophils

Answer 23

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Question 24

Dendritic cells (DCs)

Answer 24

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Question 25

Follicular dendritic cells (FDCs)

Answer 25

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Question 26

B lymphocytes

Answer 26

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Question 27

T lymphocytes

Answer 27

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Question 28

Naive T lymphocytes

Answer 28

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Question 29

Naive B lymphocytes

Answer 29

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Question 30

Clonal expansion

Answer 30

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Question 31

Effector cells

Answer 31

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Question 32

Memory cells

Answer 32

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Question 33

Homeostatic proliferation

Answer 33

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Question 34

Lymphopenic

Answer 34

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Question 35

Lymphodepletion

Answer 35

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Question 36

Plasmablast

Answer 36

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Question 37

Plasma cells

Answer 37

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Question 38

Memory lymphocytes

Answer 38

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Question 39

Natural killer (NK) cells

Answer 39

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Question 40

Innate lymphoid cells (ILCs)

Answer 40

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Question 41

Primary lymphoid organs

Answer 41

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Question 42

Secondary (or peripheral) lymphoid organs

Answer 42

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Question 43

Bone marrow

Answer 43

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Question 44

Hematopoiesis

Answer 44

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Question 45

Colony-stimulating factors

Answer 45

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Question 46

Thymus

Answer 46

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Question 47

DiGeorge syndrome

Answer 47

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Question 48

Thymocytes

Answer 48

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Question 49

Lymphatic system

Answer 49

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Question 50

Lymph

Answer 50

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Question 51

Lymph node

Answer 51

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Question 52

Follicle

Answer 52

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Question 53

Lymphoid tissue inducer (LTi) cells

Answer 53

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