Question

Tissue macrophages have on their surfaces receptors able to recognize components common to many pathogens. These receptors include the macrophage mannose receptor, which is found on macrophages but not on monocytes or neutrophils. The macrophage mannose receptor is a member of what calcium-dependent family?

Immunotoxins
Streptolysins
Immunophilins
Endotoxins
Lectins

Answer 1

The macrophage mannose receptor, found on macrophages and responsible for recognizing pathogen components, is a member of the 5) lectin family.

Step-by-step explanation:

The macrophage mannose receptor is a member of the 5) lectin family, which is calcium-dependent.

These receptors, including the macrophage mannose receptor, recognize specific carbohydrates that are part of the pathogen-associated molecular patterns (PAMPs).

The ability to identify PAMPs allows macrophages to bind pathogens and initiate an immune response, such as phagocytosis, to destroy the invading microbes.

Lectins are crucial in the innate immune response as they function as pattern recognition receptors (PRRs), detecting foreign pathogens and differentiating them from the body's own cells.