26381
The scaffolds are either incubated in 10 mM calcium glycerophosphate ( Ca - GP ) solution for 2 weeks or implanted in a rat subcutaneous model for 4 weeks .
 calcium glycerophosphate, Ca - GP
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 calcium glycerophosphate, Ca - GP