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We now show that lysosomal enlargement and zinc build - up in TRPML1 - KD cells exposed to zinc are ameliorated by KD of the zinc - sensitive transcription factor MTF - 1 ( metal - regulatory - element - binding transcription factor - 1 ) or the zinc transporter ZnT4 .
 Chemical: zinc; Chemical: zinc; Chemical: zinc; Chemical: zinc
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: zinc; Chemical: zinc; Chemical: zinc; Chemical: zinc