919
A cDNA clone corresponding to the putative GA 20 - oxidase genomic sequence was constructed with the reverse transcription - PCR method , and the identity of the cDNA clone was confirmed by analyzing the capability of the fusion protein expressed in Escherichia coli to convert GA53 to GA44 and GA19 to GA20 .
 GENE: GA 20; GENE: oxidase; GENE: GA53; GENE: GA44; GENE: GA19; GENE: GA20
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: GA 20; GENE: oxidase; GENE: GA53; GENE: GA44; GENE: GA19; GENE: GA20