4022
Immunohistochemical analysis showed the presence of NIS in the large majority of seminomas ( 90 / 98 ) and embryonal carcinomas ( 5 / 7 ) of the testis but not in Leydig cell carcinomas .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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