2660
CONCLUSIONS - - Postlumbar puncture headache may be mediated by the release of substance P triggered by lumbar puncture , in patients predisposed to headache by a hypersensitivity to substance P .
 GENE: substance P; GENE: substance P
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: substance P; GENE: substance P