1306
Genomic DNA was isolated from leukocytes , and all exons of the XLRS1 gene were amplified by polymerase chain reaction and analyzed using a direct sequencing method .
 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