Fig. 6

CLSM images of FITC-labeled HAP nanoparticles. This figure shows the plant root treated with FITC-labeled HAP nanoparticles (a), the root of the blank sample (b), the plant shoot treated with FITC-labeled HAP nanoparticles (c), and the shoot of the blank sample (d). Imaging was performed at excitation/emission wavelengths of 495/518 nm. Abbreviations: FITC, fluorescein isothiocyanate; HAP, hydroxyapatite nanoparticles