9673
In vitro precipitation with a glutathione - S - transferase - fusion protein containing the C - terminal transactivation domain of STAT5a showed GH - regulated association of ERK1 / 2 with the fusion protein , while this was not seen when serine 780 in STAT5a was changed to alanine .
 GENE: glutathione - S - transferase - fusion protein; GENE: STAT5a; GENE: GH; GENE: ERK1 / 2; GENE: STAT5a
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: glutathione - S - transferase - fusion protein, STAT5a, GH, ERK1 / 2, STAT5a 
Answer:
 GENE: glutathione - S - transferase - fusion protein; GENE: STAT5a; GENE: GH; GENE: ERK1 / 2; GENE: STAT5a