1781
Southern hybridization analysis of BenR and BenS transformants suggested that plasmid integration occurred most frequently at the chromosomal bens locus , however evidence for gene conversion and heterologous recombination was also observed .
 GENE: BenR; GENE: BenS transformants; GENE: bens locus
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: BenR; GENE: BenS transformants; GENE: bens locus