29466
In the second experiment , six pigs were surgically fitted with a catheter in the jugular artery and vein to investigate the dynamic changes of serum Fe and TIBC .
 Chemical: Fe
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Fe 
Answer:
 Chemical: Fe