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BSA-capsaicin nanoparticle uptake by cultures of R. mucilaginosa. (a) Treatment with NaCl buffer did not show rhodamine B signal. (b) Treatment at 0 µg/mg showed nanoparticles aggregated on the surface of cells (see white arrow). (c) Accumulation of the BSA-capsaicin nanoparticles staining with rhodamine B into the R. mucilaginosa cell was observed at 65.0 μg/mg.
