9268
Alginate hydrogels containing TAT - HSP27 as an anti - apoptotic agent were prepared , and porous PLGA microspheres loaded with VEGF as an angiogenic agent were incorporated into the hydrogels to prepare microsphere / hydrogel hybrid delivery systems .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None