12218
When mixed with aqueous solutions of TMT - 55 , aqueous solutions of either reagent - grade zinc , cadmium , or lead salts precipitate crystalline " Zn - TMT " , amorphous or crystalline " Cd - TMT " or amorphous " Pb - TMT " ( M3 [ S3C3N3 ] 2 . nH2O , where M = Cd2 + , Pb2 + , and Zn2 + and n > or = 0 ) that may eventually crystallize if stored in air .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
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