24792
The pathogenesis of l - cystine kidney stones involves four critical steps : nucleation , crystal growth , crystal aggregation , and crystal adhesion to cells .
 Chemical: l - cystine
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: l - cystine