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(a) Schematic of the CEFR technique. (b) Variation of at four locations on a lateral section of the compound eye, while the angle is fixed in the original CEFR technique.
Center: Cross-sectional SEM image of a lateral section of an eye coated by the original CEFR technique and encased in a resin. Perimeter: High-magnification images of sections identified as 1–4 in the central image.
Same as Fig. 2 , but with the second modality of the modified CEFR technique.
Average thickness and percent standard deviation for [(a) and (b)] two sections coated using the original CEFR technique, [(c) and (d)] two sections coated using the first modality of the modified CEFR technique, and (e) a section coated using the second modality of the modified CEFR technique.
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