15556
These results demonstrate that apixaban is a substrate for efflux transporters P - gp and BCRP , which can help explain its low brain penetration , and low fetal exposures and high milk excretion in rats .
 Chemical: apixaban
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: apixaban