The supergiant fast X-ray transient (SFXT) system IGR J17544–2619 has displayed many large outbursts in the past and is considered an archetypal example of SFXTs. A search of the INTEGRAL/ISGRI data archive from MJD 52698–54354 has revealed 11 outbursts and timing analysis of the light curve identifies a period of 4.926±0.001 days which we interpret as the orbital period of the system. We find ...

INTRODUCTION The aim of this study was to characterize interleukin 17 (IL-17) and interleukin 22 (IL-22) producing cells in peripheral blood (PB), skin, synovial fluid (SF) and synovial tissue (ST) in patients with psoriasis (Ps) and psoriatic arthritis (PsA). METHODS Flow cytometry was used to enumerate cells making IL-22 and IL-17, in skin and/or SF and PB from 11 patients with Ps and 12 pa...

Steroidal sapogenins bearing a good leaving group at C23 undergo a completely stereospecific rearrangement under a variety of conditions via a mechanism involving neighboring-group participation by the acetal oxygen atom in the departure of the nucleofuge from C23. The reactions of equatorial (23S)-23-bromo- or (23S)-23-tosyloxyspirostanes with either the alpha (25R) or beta (25S) oriented 25-m...

Arne-Jørgen Berre, Brian Elvesæter, Nicolas Figay, Claudia Guglielmina, Svein G. Johnsen, Dag Karlsen, Thomas Knothe and Sonia Lippe 1 SINTEF ICT, P. O. Box 124 Blindern, N-0314 Oslo, Norway [arne.j.berre, brian.elvesater, svein.g.johnsen]@sintef.no 2 EADS CCR, 12 rue Pasteur BP 76, Suresnes Cedex, France [email protected] 3 TXT e-solutions, Sal. San Barborino 23r, Genova, Italy claudia.gu...

Sexual morphogenesis in Achlya, a filamentous water mold, is initiated by two hormones. Hormone A, or antheridiol, is a C-29 steroid. Four stereoisomers of antheridiol have been synthesized. The natural one (antheridiol 22S 23R) and its 7-deoxy 7-dihydro form, when added to an aerated culture of hermaphroditic Achlya heterosexualis, stimulated this mold to secrete twice as much hormone B as the...