Von Ebner glands are mainly present in?
The posterior lingual serous gland also known as von Ebner's glands is a minor salivary gland located in the epithelium of the trough circling the circumvallate papillae on the dorsal surface of the tongue near the terminal sulcus. Ref: Orban's oral histology and embryology, 13th edition.
Palate
Buccal mucosa
Tongue
Posterior pharyngeal wall
Head and neck