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Representative photomicrographs of the chick embryo CAM treated with free and complexed MRN at 33 μM. Samples (100 μL/egg) were applied directly on CAM surface. Retinoic acid was used as positive control (3 μM). (a) Negative control; (b) retinoic acid; (c) free MRN; (d) MRN/SBE-β-CD inclusion complex; (e) MRN/HP-β-CD inclusion complex.
