R Siefken
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Explore the profile of R Siefken including associated specialties, affiliations and a list of published articles.
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10
Citations
103
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Recent Articles
1.
Varshney R, Grosse I, Hahnel U, Siefken R, Prasad M, Stein N, et al.
Theor Appl Genet
. 2006 Jun;
113(2):239-50.
PMID: 16791690
A set of 111,090 barley expressed sequence tags (ESTs) was searched for the presence of microsatellite motifs [simple sequence repeat (SSRs)] and yielded 2,823 non-redundant SSR-containing ESTs (SSR-ESTs). From this,...
2.
Guzyr O, Siefken R, Chakraborty D, Roesky H, Teichert M
Inorg Chem
. 2003 Jan;
39(8):1680-3.
PMID: 12526554
The reaction of (eta 5-C5Me5)TaMe4 with tert-butylphosphonic acid leads to the formation of a mixture of compounds: [[(eta 5-C5Me5)TaMe][t-BuP(O)(OH)][t-BuP(O)(OH)2]]2(t-BuPO3)2 (1) and [[(eta 5-C5Me5)Ta][t-BuP(O)(OH)2]]2(t-BuPO3)2(mu-O)2 (2). Compound 2 was also obtained by...
3.
Schwinzer R, Baars W, Siefken R
Transplant Proc
. 2001 Mar;
33(1-2):433-4.
PMID: 11266896
No abstract available.
4.
Kerkhoff E, Fedorov L, Siefken R, Walter A, Papadopoulos T, Rapp U
Cell Growth Differ
. 2000 Apr;
11(4):185-90.
PMID: 10775035
The c-Raf-1 kinase is a downstream effector of Ras signaling. Both proteins are highly oncogenic when they are mutationally activated, but only the Ras GTPase is frequently mutated in naturally...
5.
Siefken R, Serfling E, Kurrle R, Schwinzer R
J Immunol
. 1998 Aug;
161(4):1645-51.
PMID: 9712026
Stimulation of resting human T cells with the CD28-specific mAb BW 828 induces proliferation and cytokine synthesis without further requirement for TCR coengagement. This observation prompted us to postulate that...
6.
Siefken R, Kurrle R, Schwinzer R
Cell Immunol
. 1997 Feb;
176(1):59-65.
PMID: 9070318
Stimulation of resting human T cells by crosslinked CD28 monoclonal antibodies (mAb) induces some early signaling events but does not lead to IL-2 secretion and proliferation. The induction of these...
7.
Schwinzer R, Siefken R
Transpl Immunol
. 1996 Mar;
4(1):61-3.
PMID: 8762014
Lymphocytes in different states of activation use different intracellular signalling pathways and may therefore differ in their susceptibility to immunosuppressive agents. In this study we examined the proliferation and production...
8.
Schwinzer R, Siefken R, Franklin R, Saloga J, Wonigeit K, Gelfand E
Eur J Immunol
. 1994 Jun;
24(6):1391-5.
PMID: 8206099
CD45RA+ cells have been described to be less responsive to CD3/T cell receptor (TcR)-mediated activation than CD45R0+ T cells. To analyze the underlying mechanism of the differential responses we compared...
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