10692
From cloning studies CBPTI - 1 was found to consist of 66 amino acid residues , while CBPTI - 2 and CBPTI - 3 precursors consist of 60 amino acid residues , including 6 cysteine residues .
 Chemical: amino acid; Chemical: amino acid; Chemical: cysteine
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: amino acid; Chemical: amino acid; Chemical: cysteine