3722
A 400 - bp fragment ( bp - 339 through + 71 ) of the CD22 promoter region was subcloned into a pGEM - chloramphenicol acetyltransferase vector and after transfection into B and T cells was found to be active in both B and T cells .
 GENE: CD22 promoter region; GENE: chloramphenicol acetyltransferase
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: CD22 promoter region; GENE: chloramphenicol acetyltransferase