1625
Embryos exposed to 0 . 25 mg MPA / l medium showed impaired development of nerves , and at 0 . 1 mg / l , no effects were detectable .
 Chemical: MPA
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: MPA 
Answer:
 Chemical: MPA