72863
A series of steps catalyzed in part by the recombinase then leads to joining of the two helices by at least one Holliday junction , in which a segment of a single strand in each helix is annealed to the complementary strand in the other helix .
 Holliday
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Holliday