7440
However , we did not observe a correlation between serum and seminal plasma PSA levels .
 GENE: seminal plasma PSA
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: seminal plasma PSA 
Answer:
 GENE: seminal plasma PSA