11655
The polymer network slows down the Na ( + ) / H ( + ) exchange between Bioglass and water used to leach salt particles to create pores within the scaffold .
 Chemical: Na ( + ); Chemical: H ( + )
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: Na ( + ); Chemical: H ( + )