1699
CONCLUSIONS : XCoe2 may play a pivotal role in the transcriptional cascade that specifies primary neurons in Xenopus embryos : by maintaining Delta - Notch signalling , XCoe2 stabilises the higher neural potential of selected progenitor cells that express X - ngnr - 1 , ensuring the transition between neural competence and irreversible commitment to a neural fate ; and it promotes neuronal differentiation by activating XNeuroD expression , directly or indirectly .
 GENE: XCoe2; GENE: Delta; GENE: Notch; GENE: XCoe2; GENE: X - ngnr - 1; GENE: XNeuroD
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: XCoe2; GENE: Delta; GENE: Notch; GENE: XCoe2; GENE: X - ngnr - 1; GENE: XNeuroD