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X-ray scattering study of the interactions between magnetic nanoparticles and living cell membranes
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Image of FIG. 1.
FIG. 1.

Transmission electron microscope image of a particle. The dark region of the particle corresponds to and the light region is amorphous silica.

Image of FIG. 2.
FIG. 2.

(a) Distribution of particle sizes taken by TEM. (b) Agglomeration of the particles as a function of time in the M9 medium

Image of FIG. 3.
FIG. 3.

A schematic diagram of (a) the continuous culture of E. coli and (b) the in situ x-ray scattering.

Image of FIG. 4.
FIG. 4.

Magnetic field strength as a function of the distance between the two magnets. Field strengths of 227, 298, 362, and were used in the experiments.

Image of FIG. 5.
FIG. 5.

In situ x-ray scattering results from E. coli continuous cultures (a) in the absence and (b)–(d) in the presence of the magnetic particles (three repeats). .

Image of FIG. 6.
FIG. 6.

Peak position as a function of the applied magnetic field strengths.

Image of FIG. 7.
FIG. 7.

Transmission electron microscope images showing that E. coli have contacts with the particles. Arrows point out contacting parts between the cells and the particles. (a) An E. coli cell surrounded by the magnetic particles. (b) A magnetic particle in contact with the E. coli membrane.


Generic image for table
Table I.

Peak positions as a function of the presence of the particles and applied magnetic field strengths.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: X-ray scattering study of the interactions between magnetic nanoparticles and living cell membranes