26740
Experimental studies have shown that free circulating A beta re - enters the brain and that sLRP1 and / or its recombinant wild - type cluster IV ( WT - LRPIV ) prevent A beta from entering the brain .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None