133
A total of 26 BCG strains , out of them 10 Czechoslovak strains ( 2 lyophilized cultures of BCG of different batch , 6 strains isolated from abscesses of children after BCG - vaccination and 2 strains from fatal cases after BCG - vaccination ) and 16 strains obtained from foreign laboratories , were used .
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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:
 None