. "Any process that prevents the activation of neuroepithelial cell differentiation. Neuroepithelial cell differentiation is the process in which epiblast cells acquire specialized features of neuroepithelial cells." . . . . . "inhibition of neuroepithelial cell differentiation" . "negative regulation of neural plate formation" . "repression of premature neural plate formation" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .