25853
All dual - loaded formulations showed direct antimicrobial activity in vitro against Staphylococcus epidermidis , and two strains of methicillin - resistant Staphylococcus aureus ( MRSA ) .
 Chemical: methicillin
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: methicillin