Influence of a mixture of chemical protectors on the lymphopoietic and hematopoietic system of mice irradiated with a dose of 2000 R of X-Rays

Résumé La moelle osseuse, la rate et le thymus montrent, 30 jours après une dose de 2000 R de rayons X et un traitement préalable avec une association d'AET, de glutathion, de 5-hydroxytryptamine et de cystéine, un aspect histologique et cytologique normal. Au même moment, la régénération des ganglions et des plaques de Peyer est bonne mais moins avancée.

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This work was supported in part by Research Contract A.I.E.A. No. 347/RB and by grants from the Fonds de la Recherche scientifique fondamentale collective.     

Einfluss von angiotensin auf das argentaffine system des meerschweinchens

Summary The duodenum of guinea-pigs were dissected immediately after death and incubated for 10 min at 37 °C in a solution of Krebs-Ringer-Bicarbonate buffer, in which Hypertensin (CIBA) was added. The result was that the argentaffine cells were more numerous after the incubation period, as compared with the controls. The 2 controls were pieces placed into the solutions of Formalin and blank Krebs-Ringer-Bicarbonate buffer.     

Repopulation of thymus,spleen and bone-marrow of irradiated AKR mice injected with normal or irradiated bone-marrow cells

Résumé L'utilisation d'une race de souris (AKR/T1Ald) ne possédant que 38 chromosomes a permis de montrer que les cellules de moelle que l'on injecte à un individu irradié repeuplent directement la moelle, le thymus et la rate du receveur. Si le donneur est irradié, la pénétration des cellules n'est importante que dans la rate du receveur.

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Acknowledgements. This work was supported by grants from the Fonds de la Recherche scientifique fondamentale collective. The helpful assistance of Mr.G. Linden andG. Mattelin is gratefully acknowledged.