part_of adult salivary gland type III acini adult salivary gland E cell Cell type found in the Type III acini of the salivary glands. This is the dominant cell type found in the Type III acini. These cells are filled with numerous homogeneous granules up to 6 microns in diameter. These granules are composed of numerous densely packed subunits. E cells are also (along with D cells) believed to the site of biosynthesis and secretion of the cement compounds. These cells deplete the granules soon after attachment and gradually atrophy as feeding progresses. Fig. 8-10, Fig. 8-13, in Biology of Ticks ISBN:0-19-505910-7. TADS:0000140 TADS:0000140 default_namespace cell