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SEM micrographs of the petal surfaces (1a–4a), the uncoated polymer replicas (1b–4b) and the coated replicas (1c–4c) of Cosmos atrosanguineus (1a–1c), Dahlia pinnata (2a–2c), Rosa chinensis (3a–3c) and the wild pansy Viola tricolor (4a–4c).
