1339
No significant differences existed between the two age groups in baseline characteristics , including treatment protocol , performance status , and serum lactate dehydrogenase ( LDH ) level .
 GENE: serum lactate dehydrogenase; GENE: LDH
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: serum lactate dehydrogenase; GENE: LDH