1832
Magnetic resonance imaging has detected gross differences in BCM between healthy and diabetic mice using the contrast agent manganese , which labels functional beta - cells and increases the water proton relaxation rate ( R1 ) , but its ability to measure gradations in BCM during disease progression is unknown .
 Chemical: manganese
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: manganese