Delete a File. Deleted files are moved to your Deleted Items list, where they can be restored if necessary. To delete a file stored in Cloud Drive: 1  Go to Amazon Cloud Drive from a Web browser. 2  Select the file(s) you want to delete.
mucous cells, which produce a very mucus-rich secretion Acini in the parotid glands are almost exclusively of the serous type, while those in the sublingual glands are predominantly mucus cells. In the submaxillary glands, it is common to observe acini composed of both serous and mucus epithelial cells. In the histologic sections of canine salivary gland shown above, the cells stained pink are serous cells, while the white, foamy cells are mucus-secreting cells. Secretion of saliva is under control of the autonomic nervous system, which controls both the volume and type of saliva secreted.
The basis for different glands secreting saliva of differing composition can be seen by examining salivary glands histologically. Two basic types of acinar epithelial cells exist: 1  serous cells, which secrete a watery fluid, essentially devoid of mucus.  mucous cells, which produce a very mucus-rich secretion.