Denne oversigtsartikel er en gennemgang af spytkirtlernes normale struktur og funktion samt spyttets funktioner. Den bygger både på veldokumenteret viden fra lærebøger og på den nyeste forskning. Den nyeste litteratur er udvalgt fra databasen PubMed primært ved anvendelsen af søgeordene: Salivary gland, saliva, innervation og secretion.
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