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Bauhinia seeds contain relatively large quantities of peptidase inhibitors , and two Bauhinia inhibitors were obtained in a recombinant form from the Bauhinia bauhinioides species , B . bauhinoides cruzipain inhibitor , which is a cysteine and serine peptidase inhibitor , and B . bauhinioides kallikrein inhibitor , which is a serine peptidase inhibitor .
 Chemical: cysteine; Chemical: serine; Chemical: serine
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: cysteine; Chemical: serine; Chemical: serine