26009
Hollow Mn - doped iron oxide nanocontainers , formed by a novel one - pot synthetic process , fulfill the dual requirements of delivering an effective dose of an anticancer drug to tumor tissue and enabling image - contrast monitoring of the nanocontainer fate through T2 - weighted magnetic resonance imaging , thereby determining the optimal balance between diagnostic and therapeutic moieties in an all - in - one theranostic nanoplatform .
 Chemical: Mn - doped iron oxide
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: Mn - doped iron oxide