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(A) Storage (G′) and loss (G″) moduli of hydrogels formed from 30 wt % alendronate-functionalized POxs and 20 wt % CaCl2, measured at a frequency of 1 Hz. (B) Frequency dependence of storage (solid symbols, G′) and loss (open symbols, G″) moduli at 1% strain of hydrogels formed from 30 wt % alendronate-functionalized POxs and 20 wt % CaCl2.
