Heterogeneity of population of microorganisms grown in presence of iron oxide maghemite nanoparticles Tatyana P. Denisova, Elena V. Simonova, Lubov A. Kokorina, Evgenia N. Maximova, Oleg M. Samatov, Alexander P. Safronov and Galina V. Kurlyandskaya EPJ Web Conf., 185 (2018) 10002 Published online: 04 July 2018 DOI: 10.1051/epjconf/201818510002