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Rheological frequency sweep of storage (G′) and loss (G″) moduli for various bio-inks. All bio-inks were tested at room temperature except for GelMA, which was measured at room temperature and 37°C. PEGDA and GelMA bio-inks were cured by exposure to light (λ = 400–410 nm) for 5 minutes. RAPID inks were cured by exposure to a 10 mM calcium chloride solution for 10 minutes.
