In this report, we present 3 cases of abscess caused by Citrobacter koseri. All infected patients recovered after initial empirical antibiotic treatment and percutaneous drainage of the abscess. We reviewed the literature and found 9 adult cases of C. koseri abscess. Most of these patients recovered after timely antibiotic treatment and drainage.

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Compounds of the type M3[Fe(CN)6]2XH2O (M = Co(II), Ni(II), Cu(II), and Zn(II)) were prepared and magnetic properties of their powders were investigated by means of EPR spectra, Mössbauer effect and magnetic susceptibility measurements. The temperature dependence of the magnetization for the complexes Co3[Fe(CN)5]2‐ 10H2O, Ni3[Fe(CN)6]2‐10H2O and Cu3[Fe(CN)6]2‐4H2O revealed that below the critical temperatures 15, 22 and 20 K respectively, these complexes have zero‐field magnetization. The magnetic hysteresis at 10 K for Co(II), Ni(II) and Cu(II) complexes was observed. Mössbauer spectra at 4.2 K for the compounds are discussed.

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