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. 2021 Jan 28;19:21. doi: 10.1186/s43141-021-00119-0

Fig. 1.

Fig. 1

a A: magnesium nitrate solution, B: before the synthesis of nanoparticles, C: after synthesis of nanoparticles. b UV-Visible spectrophotometric analysis of biosynthesized magnesium oxide nanoparticles. c UV-Visible spectrophotometric analysis of Pterocarpus marsupium heartwood extract