2025
There was a difference in metoprolol potency with higher racemic metoprolol IC50 values in PMs ( 72 + / - 7 ng . ml - 1 ) than EMs ( 42 + / - 8 ng . ml - 1 , P less than . 001 ) . ( ABSTRACT TRUNCATED AT 250 WORDS )
 Chemical: metoprolol; Chemical: metoprolol
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: metoprolol; Chemical: metoprolol