Representative microphotographs showing RD3 expression and cellular localization in human (A) parotid gland, (B) submandibular gland, (C) salivary gland, (D) exocrine pancreas, (E) kidney, (F) liver, (G) spleen, (H) tonsils, (I) thyroid, (J) prostate, (K) testis, and (L) fallopian...