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

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

The Spanish and Portuguese Empires had based their superiority over the indigenous Americans on their Catholic faith; in the second half of the nineteenth century, imperialists based their superiority on

The posterior interventricular sulcus

Parasympathetic innervation of the heart occurs via

When blood passes through systemic capillaries, the oxygen saturation of hemoglobin changes

Passive immunity lasts

Dendritic cells of the skin are derived from

22.  This term for plate printmaking means “cut into” in Italian. 

The Japanese Meiji government entered the imperial fray by invading