vasoactive intestinal polypeptide ( vip ) in the neoplastic cells of acinic cell carcinomas arising in the human parotid gland was found immunohistochemically , whereas other parotid gland tumors , such as pleomorphic adenoma , warthin 's tumor , oxyphilic adenoma , mucoepidermoid carcinoma , adenocarcinoma , and adenoid cystic carcinoma , did not show positive immunoreactivity for vip .
C0597032
neoplastic cells
C0206685
acinic cell