582
To investigate this hypothesis , the present study in rats examined the memory - altering abilities of structural analogs of PREGS , which differ in their modulation of NMDAR and / or GABA ( A ) R function .
 Chemical: PREGS; Chemical: GABA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: PREGS; Chemical: GABA