Table 1.

Abbreviations of samples used in this work.

Abbreviation	Description of sample
B/SF	SF microspheres loaded with BMP9
Gel	alginate crosslinked with Ca2+
Gel + SF	Gel containing SF microspheres only
Gel + B	Gel containing BMP9 only
Gel + B/SF	Gel containing B/SF microspheres only
Gel + V	Gel containing VEGF only
Gel + B/SF + V	Gel containing both VEGF and B/SF microspheres