Figure 7: Magnified micrographs from Figures 3 and 5 show that the secretory pores are lined with cork-screw shaped channel system. Figure 7 shows that the secretory pore is surrounded by serrated papillae and some of them are imbricated (Im) and have taste bud orifices (Tb). Note the presence of an orifice of a secretory pouch (Spo) inside the channel system and the mucoid secretion (Mu) that emitted from deep trenches between the lingual papillae. ×750.