The spatial and temporal aspect of the progressive induction of genes and cell fates in the ventral neural tube is illustrated by the expression domains of two of the most well characterized transcription factors, Olig2 and Nkx2.2.
O aspecto espacial e temporal da indución progresiva de xenes e destinos celulares no tubo neural ventral pode ilustrarse polos dominios de expresión de dous dos mellor caracterizados factores de transcrición que interveñen, Olig2 e Nkx2.2.