7690
Ischemic and hemorrhagic strokes have different etiologies , but share some pathogenic mechanisms , including a pro - neurotoxic effect of endogenous tissue plasminogen activator ( tPA ) via N - methyl - d - Aspartate ( NMDA ) receptors .
 Chemical: N - methyl - d - Aspartate; Chemical: NMDA
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: N - methyl - d - Aspartate, NMDA 
Answer:
 Chemical: N - methyl - d - Aspartate; Chemical: NMDA