1657
Among 258 X chromosome-containing sperm , 19% had a repeat number equal to the donor's somatic DNA (47 repeats), 66% were expansions and 15% were contractions .
 ( DNA: donor#$%#s somatic DNA, None) , ( cell type: sperm, None) , ( cell type: X chromosome-containing sperm, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: donor#$%#s somatic DNA, None) , ( cell type: sperm, None) , ( cell type: X chromosome-containing sperm, None) 