What cells destroy infected cells?

There are two types of T-cells in your body: Helper T-cells and Killer T-cells. Killer T-cells do the work of destroying the infected cells. The Helper T-cells coordinate the attack.

What part of the immune system destroys pathogens?

Neutrophils — These are the most numerous type of innate immune responder cells. Their primary job is to destroy pathogens.

Which destroys infected cells and recognize cancerous cells?

Dendritic cells digest foreign or cancerous cells and present their proteins on their surfaces, where other immune cells can better recognize and then destroy the harmful cells. Macrophages are known as the “big eaters” of the immune system. Macrophages engulf and destroy bacteria and other harmful cells.

What type of immunity uses helper cells and killer cells?

Key Terms

Term	Meaning
T cells	White blood cells specialized to assist B cells (helper T) and others directly kills infected cells (killer T)
Humoral immunity	Adaptive immune defense depending on the action of antibodies
Cell-mediated Immunity	Adaptive immune defense in which foreign cells are destroyed by T cells

Which of the following destroys virus infected cells?

Cytotoxic T lymphocytes, natural killer (NK) cells and antiviral macrophages can recognize and kill virus-infected cells. Helper T cells can recognize virus-infected cells and produce a number of important cytokines.

How do NK cells recognize infected cells?

NK cells differentiate from lymphocyte progenitor cells and are a critical part of the innate immune system. NK cells recognize abnormal or infected cells with activating receptors and inhibitory receptors. All normal cells in the body express MHC I to signal that those cells are part of the body.

What is immunity system?

The immune system is a complex network of cells and proteins that defends the body against infection. The immune system keeps a record of every germ (microbe) it has ever defeated so it can recognise and destroy the microbe quickly if it enters the body again.

Which type of infectious agent invades a host cell and then destroys it through replication?

Once you’re infected, viruses invade host cells within your body. They then use the components of the host cell to replicate, producing more viruses. After the replication cycle is complete, these new viruses are released from the host cell. This usually damages or destroys the infected cells.

Which of the following destroys virus-infected cells in adaptive immunity?

Cytotoxic T cells destroy virus-infected cells in the cell-mediated immune response, and helper T cells play a part in activating both the antibody and the cell-mediated immune responses.