8959
Moreover , TSN could be internalized into Caco - 2 cell monolayer through clathrin - mediated endocytosis pathway , and then mainly transported into the systemic circulation via portal vein and intestinal lymphatic pathway .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None