17128
Evidence indicates that cysteine protease falcipain - 2 plays essential role in malaria parasites ; therefore the potent and selective inhibitors of falcipain - 2 may be therapeutically useful drugs for treatment of various forms of malaria parasite plasmodium .
 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: cysteine