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Leukemia - inhibitory factor ( LIF ) is a neuropoietin able to regulate the differentiation and the survival of many cell types , which include some neuronal populations .
 GENE: Leukemia - inhibitory factor; GENE: LIF; GENE: neuropoietin
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: Leukemia - inhibitory factor; GENE: LIF; GENE: neuropoietin