942
The LTD can be blocked by systemic application of the selective GluN2B antagonist Ro25 - 6981 ( 6 mg / kg , i . p . ) or a synthetic peptide Tat - GluA2 ( 3Y ) ( 3 mu mol / kg , i . p . ) that interferes with the endocytosis of AMPA receptors .
 Chemical: Ro25 - 6981; Chemical: AMPA
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: Ro25 - 6981, AMPA 
Answer:
 Chemical: Ro25 - 6981; Chemical: AMPA