2850
Low density lipoprotein receptor - related protein - 1 ( LRP - 1 ) is a catabolic receptor for extracellular matrix ( ECM ) structural proteins and for proteins that bind to ECM .
 extracellular matrix, ECM, ECM
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 extracellular matrix, ECM, ECM