12461
Genetic deletion or pharmacological antagonism of LPA1 protected mice from peritoneal fibrosis , blunting the increases in peritoneal collagen by 65 . 4 and 52 . 9 % , respectively , compared to control animals and demonstrated that peritoneal fibroblast proliferation was highly LPA1 dependent .
 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