Fig. 1From: Sensitive and selective detection of Mucin1 in pancreatic cancer using hybridization chain reaction with the assistance of Fe3O4@polydopamine nanocompositesCharacterization of the as-synthesized nanoparticles. SEM images (A, B); TEM images (C, D); UV–Vis absorption spectra (E), the optical photos (F), FT-IR spectra (G), magnetic hysteresis curves (H), and the magnetic properties measurement using the magnet (I) of Fe3O4 NPs and Fe3O4@DOP NPsBack to article page