24658
These results link MK2 / 3 to the regulation of calcium dynamics and identify enzymatic activity of MK2 / 3 as a critical factor for modulating cross - striated muscle function by generating a unique muscle phenotype exhibiting both , reduced fatigability and enhanced force in MK2 / 3 ( - / - ) mice .
 Chemical: calcium
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: calcium