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  Indian J Med Microbiol
 

Figure 2 Ultrastructure of CCAs and fish gelatin. Scanning electron microscopy (SEM) images of CCA (manufactured in 2008, 2013 and 2017) samples and fish gelatin powder. The samples were mounted on stubs and then coated with a thin layer of osmium. The surfaces of samples were observed (original magnification: 10,000×) under the scanning electron microscope. Scale bars: 1 μm. CCA: Colla Corii Asini.

Figure 2 Ultrastructure of CCAs and fish gelatin.
Scanning electron microscopy (SEM) images of CCA (manufactured in 2008, 2013 and 2017) samples and fish gelatin powder. The samples were mounted on stubs and then coated with a thin layer of osmium. The surfaces of samples were observed (original magnification: 10,000×) under the scanning electron microscope. Scale bars: 1 μm. CCA: Colla <i>Corii Asini</i>.