Which of the following WBCs is impoant for "mucosal immunity"?: (A) Lymphocytes, (B) Neutrophils, (C) Basophils, (D) Eosinophils
Answer is A. Large numbers of lymphocytes are present in the Mucosa of lungs, GI tract and urinary tract where they provide "mucosal immunity". They are weakly phagocytic.