Which type of antibody is formed in response to parasitic infections and allergies, and has the effect of activating mast cells and basophils?

Bile salts are

Japan sent delegations to Europe and the United States with the goal of

Once a helper T-lymphocyte recognizes an antigen, it begins the immune response by secreting chemical signals called

_____ in the _____ cavity provides lubrication and reduces friction as the lungs change size during ventilation.

41. This kind of stress pushes on the structure of a building and must be countered by a pulling stress.  

The atrial reflex relies upon chemoreceptors to detect stretch in the atrial wall.

The Fc region of some antibodies can trigger the activity of NK cells.

_______________ financed the growth of industry by selling shares or part ownership in companies to individuals.

46. In the nineteenth century, this material became both less costly and more widely available for construction.