Immune Response

Question 1

Gram-negative bacteria

Answer 1

powerful direct activators of innate immune cells ( e.g. macrophages and neutrophils).

Question 2

Some gram-positive bacteria

Answer 2

have toxins that cause massive T lymphocyte activation, causing cytokine storm - activates macrophages for destruction. E.g. toxic shock syndrome.

Question 3

foam cell

Answer 3

a type of macrophage that localize to fatty deposits on blood vessel walls, where they ingest low-density lipoproteins and become laden with lipids, giving them a foamy appearance.

Question 4

T helper 1 cells (Th1)

Answer 4

usually respond to threats from bacteria and viruses.

Question 5

T helper 2 cells (Th2)

Answer 5

usually respond to parasites, including worms.