2054
The electrophysiological recording in vitro showed that Rg1 restored the LTP in slices from the rats treated with morphine , but not changed LTP in the slices from normal saline - or morphine / Rg1 - treated rats ; this restoration could be inhibited by N - methyl - D - aspartate ( NMDA ) receptor antagonist MK801 .
 Chemical: Rg1; Chemical: morphine; Chemical: morphine; Chemical: Rg1; Chemical: N - methyl - D - aspartate; Chemical: NMDA; Chemical: MK801
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: Rg1, morphine, morphine, Rg1, N - methyl - D - aspartate, NMDA, MK801 
Answer:
 Chemical: Rg1; Chemical: morphine; Chemical: morphine; Chemical: Rg1; Chemical: N - methyl - D - aspartate; Chemical: NMDA; Chemical: MK801