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. 2022 Sep 15;39(11):2905–2918. doi: 10.1007/s11095-022-03378-9

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Fig. 5 — (i) Scanning electron microscope (SEM) images of the printed a., calcium sulfate hemihydrate (blank); b., hydroxychloroquine sulfate; c., favipiravir; d., ritonavir tablets; (ii) Energy-dispersive x-ray (EDX) spectroscopy and element analysis chart. a., calcium sulfate hemihydrate (blank); b., hydroxychloroquine sulfate; c., favipiravir; d., ritonavir tablets. Element Au, Pd and Ag were from vacuum sputtering. Element distribution images: Cl surface distribution of blank (e) and hydroxychloroquine sulfate (f); F surface distribution of blank (g) and favipiravir (h).