. 2018 Jan 15;5:131. doi: 10.3389/fchem.2017.00131
Copyright © 2018 Pereira, Nunes, Toquer, Cardoso, Valente, Ferro, Silva, Carlos, Ferreira and de Zea Bermudez.
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Figure 4.
SEM images of the BS-1 (A,B), BS-2 (C,D), BS-3 (E,F), and BS-4 (G,H) hybrids.