6504
Results demonstrate that predominantly FUT7 , and to a lesser extent FUT4 , forms the selectin - ligand at the N terminus of leukocyte P - selectin glycoprotein ligand - 1 ( PSGL - 1 ) in humans and mice .
 Chemical: N
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: N