1204
The characterization of fly receptors with features similar to mammalian glycoprotein hormone receptors allows a better understanding of the evolution of this unique group of GPCRs and future elucidation of their ligand signaling mechanisms .
 GENE: mammalian glycoprotein hormone receptors; GENE: GPCRs
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: mammalian glycoprotein hormone receptors; GENE: GPCRs