Induction of suppressor cells by sodium periodate: the opposite expression of periodate-induced lymphocyte act- ivation in spleen cells of normal and nude mice.

Normal mouse spleen cells treated with sodium periodate for 10 min at 4 degrees are stimulated to undergo blastogenesis and to incorporate thymidine. In contrast, periodate treatment does not stimulate DNA synthesis in nude mice spleen cells. The effect of such treatment on the antibody response in vitro induced by sheep red blood cells (SRBC) and by trinitrophenyl polyacrylamide (TNP-PAA), a T-independent antigen has been evaluated. Periodic-induced proliferation is accompanied by a marked inhibition of the immune response to both of these antigens in normal mouse spleen cells. Mild oxidation of nude cells with periodate markedly enhances their anti-TNP response elicited by TNP-PAA. The data suggest that periodate-induced immune suppression is associated with T lymphocytes. Furthermore, periodate-treated cells are capable of suppressing the in vitro antibody response of untreated normal cells

EXODAT - The Exoplanets Database from the COROT Project : Evolution and Updates

International audienceThe extended searches for exoplanets carried out over large samples of the stellar population raised new needs. A deep investigation in the nature and origin of the new planet population could be foreseen only on a well-characterized stellar population. LAM is part of the COROT exoplanet search and the SPHERE project. Two information systems have been implemented based on the SITools framework (http://vds.cnes.fr/sitools/tech.htm. Most of the databases include data with extra information processed at LAM: astrophysical quantities and statistical results, cross-identification algorithms, rotation curves. The goal of the databases from LAM is not only to provide data but valuable information on these data. While some data will soon be released to the community, we present the last updates of the EXODAT Information System including specific conesearch and free VO access to the community. The released spectra, images, footprints, and data will be provided throughout the EXODAT information System