2321
In 17 unrelated patients and 15 controls , PCR products derived from the promoter region , exons 1 and 2 as well as the coding part of exon 3 were analysed with the single strand conformation polymorphism ( SSCP ) technique .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
 Entities:  
Answer:
 None