12459
There has been much recent interest in lysophosphatidic acid ( LPA ) signaling through one of its receptors , LPA1 , in fibrotic diseases , but the mechanisms by which LPA - LPA1 signaling promotes pathological fibrosis remain to be fully elucidated .
 Chemical: lysophosphatidic acid; Chemical: LPA; Chemical: LPA
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: lysophosphatidic acid; Chemical: LPA; Chemical: LPA