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Here , we probe the cellular uptake of streptavidin using biotinylated guanidinoneomycin ( biotinGNeo ) , a low molecular weight guanidinium - rich molecular transporter .
 Chemical: biotinylated guanidinoneomycin; Chemical: biotinGNeo; Chemical: guanidinium
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: biotinylated guanidinoneomycin; Chemical: biotinGNeo; Chemical: guanidinium