CD4 and dacryoadenitis: Glands from animals with induced dacryoadenitis (without and with treatment in Fig. 4B and 4C, respectively) contained immune cell infiltrates, consisting of small to large foci that stained positive for CD4 (Fig. 4D and 4E, respectively), CD8 (Fig. 4F and 4G, respectively), RTLA (Fig 4H and 4I, respectively), and CD18 (Fig 4J and 4K, respectively) antigens located between acini and around ducts and venules.