Which cell releases histamine during acute inflammation?

• neutrophils

• eosinophils

• platelets

• mast cells

Which of the following innate immune cells would best obliterate a viral infection?

• Neutrophil

• Natural killer cell

• Eosinophil

• Basophil

A type of cell that "digests" pathogens is known as a/an:

• helper T cell
• macrophage
• suppressor T cell
• plasma cell

A type of T cell that destroys viral infected cells is a:

• cytotoxic T cell

• helper T cell

• memory T cell

• suppressor T cell

Production of ................................... by viral infected cells inhibit virus replication.

• interferon

• histamine

• plasma cell

• antibodies

Individuals with AIDS may have difficulty fighting off otherwise harmless infections because AIDS...

• causes colds and fevers that wipe out B cells.

• produces antibodies that attack healthy cells.

• attacks T4 (T helper) cells that normally fight off infection.

• sits inactive in cells until it is triggered.

Immune cells regards this as foreign:

• antibody

• antigen

• T-Cells

• Cytotoxic T-Cells

When an individual encounters the same pathogen for a second time .................................cells of adaptive immunity respond

• NK and Macrophages

• B and Dendritic Cells

• B and T cells

• T cells

Activation of complement factors that stick to the surface of pathogens:

• Opsonization
• Phagocytosis
• Cytokine release
• Apoptosis

T helper cells possess a________ receptor

• CD 1

• CD 8

• CD 44

• CD 4