2523
Transcriptional activity of HIF - 1 ( hypoxia - inducible factor - 1 ) has been reported to be up - regulated in solid tumors after ionizing radiation ; however , the molecular mechanism underlying the response remains to be elucidated .
 Anatomy: solid tumors
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: solid tumors