6687
The alpha T3 - 1 cell line , a GnRH - responsive gonadotroph cell line developed by targeted oncogenesis in transgenic mice , was used to study regulation of the glycoprotein hormone alpha - subunit by activin .
 GENE: GnRH; GENE: glycoprotein hormone alpha - subunit; GENE: activin
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: GnRH, glycoprotein hormone alpha - subunit, activin 
Answer:
 GENE: GnRH; GENE: glycoprotein hormone alpha - subunit; GENE: activin