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USMLE-Immunology > Cell Surface Proteins > Flashcards

Cell Surface Proteins Flashcards

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USMLE® Step 1 flashcards
1
Q

T cells

A

TCR (binds antigen-MHC complex)
CD3 (associated with WCR for signal transduction)
CD28 (binds B7 on APD)

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2
Q

Helper T cells

A

CD4

CD40L

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3
Q

Cytotoxic T cells

A

CD8

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4
Q

Regulatory T cells

A

CD4

CD25

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5
Q

B cells

A

Ig (binds antigens)
CD19, CD20, CD21 (receptor for EBV), CD40
MHCII, B7

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6
Q

Macrophages

A

CD14, CD20
MHCII, B7
Fc and C3b receptors (enhanced phagocytosis)

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7
Q

NK cells

A

CD16 (binds Fc of IgG), CD56 (unique marker for NK)

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8
Q

Hematopoietic stem cells

A

CD34

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USMLE-Immunology (5 decks)

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