11410
Since MEK acts as a cytoplasmic anchor for the ERKs , the lack of a MEK interaction resulted in the aberrant nuclear localization of ERK2 - Delta19 - 25 mutants in serum - starved cells .
 GENE: MEK; GENE: ERKs; GENE: MEK; GENE: ERK2; GENE: Delta19 - 25
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: MEK, ERKs, MEK, ERK2, Delta19 - 25 
Answer:
 GENE: MEK; GENE: ERKs; GENE: MEK; GENE: ERK2; GENE: Delta19 - 25