Ooscysts can be removed from municipal water supplies only by ...

[tfester]

Ooscysts can be removed from municipal water supplies only by filtration.
 
  Indicate whether the statement is true or false

Question 2

Give two examples of cell mediators of inflammation and their actions.
 
  What will be an ideal response?

[kkenney]

Answer to Question 1

True

Answer to Question 2

Mast cells have granules that contain histamine, which acts as a vasodilator, increasing vascular permeability.
Blood platelets contain histamine and serotonin that are released when platelets adhere to collagen fibers.
Prostaglandins are derived from fatty acids and sustain inflammatory response.
Leukotrienes are synthesized from arachidonic acid and increase bronchial constriction, attract neutrophils, and increase vascular permeability.