Endothelial cells line blood vessels and can produce protein…

Endothelial cells line blood vessels and can produce proteins that function as carbohydrate-binding molecules which induce the slowing and rolling of neutrophils through the vessel.  These small proteins are also involved in inflammation and trafficking of innate immune cells, lymphocytes, and platelets.  Which of the following is the name given to these small proteins produced by endothelial cells?

Cluster of differentiation (CD) molecules are cell-bound pro…

Cluster of differentiation (CD) molecules are cell-bound proteins that have various functions in the immune response.  CD1 molecules are related to MHC Class 1 molecules, but they are not involved with presentation of protein antigens.  Which of the following best describes the action of CD1 molecules?