891
The chloramphenicol - resistance transposon Tn4451 undergoes precise conjugative deletion from its parent plasmid plP401 in Clostridium perfringens and precise spontaneous excision from multicopy plasmids in Escherichia coli .
 GENE: chloramphenicol - resistance transposon; GENE: Tn4451
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: chloramphenicol - resistance transposon; GENE: Tn4451