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Among the strategies aimed at biocompatible means for organophosphorus nerve agents neutralization , immunoglobulins have attracted attention in the 1990 ' s and 2000 ' s both for their ability to immobilize the toxicants , but also for their ability to be turned into enzymatically active antibodies known as catalytic antibodies or abzymes ( antibodies - enzymes ) .
 Chemical: organophosphorus
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: organophosphorus