5709
Likewise , peripheral or direct intrahippocampal injections of MLA or DH beta E dose - dependently impaired spatial working memory scores on a spontaneous alternation task .
 Chemical: MLA; Chemical: DH beta E
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: MLA; Chemical: DH beta E