8964
Specifically , I use molecular markers that identify particular neuroectodermal domains , all neuroblasts or individual neuroblasts , to show that in DER mutant embryos ( 1 ) intermediate column neuroblasts do not form , ( 2 ) medial column neuroblasts often acquire identities inappropriate for their position , while ( 3 ) lateral neuroblasts develop normally .
 GENE: DER mutant
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: DER mutant 
Answer:
 GENE: DER mutant