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[Levels of facultative anaerobic bacteria and relative weights of thymus, spleen and caecum in SPF N:NIH mice and Riv-TOX rats.]

Kiemgetallen van facultatief anaerobe bacterien en relatieve gewichten van thymus, milt en coecum bij N:NIH muizen en Riv:TOX ratten, gehouden onder SPF condities

Synopsis

This report describes variations in the levels of groups of facultatively anaerobic bacteria in the intestinal tract and the relative weights of caecum, thymus and spleen in N:NIH mice and Riv:TOX rats kept under SPF conditions. Considerable variation in the composition of the enteric bacterial flora of mice and rats was detected. The possible influence of a poor colonization resistant (strictly anaerobic) flora (mCRF) on levels of other enteric flora elements and on relative weights of lymphoid organs is discussed.
 

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