4665
Selective upper abdominal sympathectomy increased basal acid output in rats but was without effect on stimulated acid output , serum gastrin concentration , and gastric mucosal histidine decarboxylase activity .
 GENE: serum gastrin; GENE: gastric mucosal histidine decarboxylase
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: serum gastrin; GENE: gastric mucosal histidine decarboxylase