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. 2019 Jul 30;14:258. doi: 10.1186/s11671-019-3083-y

Fig. 6.

Fig. 6

TEM micrographs from a 4.7 nm acylated chitosan AuNPs, b 3.5 nm chitosan AuNPs (0.1 M NaBH4), c 7.4 nm oligosaccharide chitosan AuNPs (COS@1), d 15.6 nm oligosaccharide chitosan AuNPs (COS@2), e 10 nm oligosaccharide chitosan AuNPs (COS@3), and f 14 nm oligosaccharide chitosan AuNPs (COS@4)