1409
In the rat portal plasma , TAK - 536 was also present as the main component with hardly detectable concentrations of TAK - 491 after jejunal loop injection of TAK - 491 , suggesting TAK - 491 was absorbed from small intestine and hydrolyzed almost completely during absorption .
 Chemical: TAK - 536; Chemical: TAK - 491; Chemical: TAK - 491; Chemical: TAK - 491
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: TAK - 536; Chemical: TAK - 491; Chemical: TAK - 491; Chemical: TAK - 491