4) has been studied in the present work. Our findings suggest that the crystal structures at room temperature for all the compositions Studied here are pseudocubic in nature Substitution of as small as 10% Fe in place of Mn destroys the long range anti ferromagnetic ordering observed in Sr2MnMoO6 and introduces local magnetic frustration, i.e., short range ferromagnetic interactions centered around the substituted Fe atoms, although the shape of the magnetic susceptibility creates an illusion of antiferromagnetic ordering. Different local structural environments around

Mn and Fe atoms are thought to be responsible buy FRAX597 for the presence of such magnetic frustration. The results have been compared with those observed previously in SrLaMnMoO6 Our detailed measurements and interpretations are clearly at variance with the magnetic phase diagrams of Mn-rich phases of Sr2Mn1-xFexMoO6 compounds reported earlier, although the experimental results appear to be similar in both cases. (C) 2009 American Institute SCH727965 of Physics. [doi: 10.1063/1.3253728]“
“Background:

It has been reported that donor-reactive T-cell responses may decrease during the first year after HLA-mismatched organ transplantation. We wondered whether donor-reactive T-cell responses directed to minor histocompatibility antigens (mHAgs) or other non-HLA antigens also decrease after HLA-identical living-related (LR) kidney

transplantation.

Methods:

We studied donor-reactive T-cell responses VX-765 in vivo by IFN-gamma and granzyme B (GrB) Elispot assays in 15 HLA-identical LR kidney transplant recipients before, six months and one yr after transplantation. Third-party reactivity was used as control. Patient and donor peripheral blood mononuclear cells were typed for 11 known mHAgs.

Results:

During the study period, 60% and 36% of the patients demonstrated donor-reactive IFN-gamma and GrB producing cells (pc), respectively. The number of donor-reactive IFN-gamma and GrB pc was significantly lower than the number of third-party reactive IFN-gamma and GrB pc. After transplantation, donor-reactivity and third-party reactivity were comparable

to pre-transplant values. No relation was found in mHAg mismatches between donor and recipient and donor-reactive T-cell response.

Conclusions:

Donor-reactivity could be detected before and after HLA-identical LR kidney transplantation, but was not related with the number of mHAg mismatches, and did not decrease after transplantation.”
“The double perovskite Sr(Ni1/2Mo1/2)O-3 has been prepared with solid-state reaction and was characterized by x-ray diffraction technique. It has been indicated that the single phase is formed at 1300 degrees C in air. The compound undergoes a phase transition at 280 degrees C, where the structure of the ordered perovskite type changes from tetragonal (I4/m) to cubic (Fm (3) over barm).