<prompt> Parotid gland containsSerous aciniMucinous aciniSerous and mucinous acini with equal proportion75 serous acini and 25 mucinous acini  <response>: Parotid glands - Contain serous aciniSub lingual glands - Contain mucious aciniMinor salivary glands - Contain mucious aciniSubmandibular glands - Contain both serous and mucinous acini 