[The influence of nutrition of Gram-negative anaerobes in the intestinal tract].

Concluding from the hitherto known results regarding nutritive influences on the intestinal microbial population, particularly the gramnegative flora, it was found that the human intestinal flora is maintained mainly by endogenous mechanisms. Furthermore, the postnatal intestinal flora shows a weaker stability than that of adults. Also in the period of infancy, influences on the gut flora are most efficient in case of changes within the milieu (ph EH etc.). Cause and importance of longitudinal alterations within the postnatal intestinal flora are obscure.