3483
Both probes identified an additional hybridizing fragment in the DNA from each patient , permitting the breakpoints in all three to be mapped within the cloned RB1 gene .
 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