[Clinical and immunobiological action of an orally administered bacterial extract].


The effect of a bacterial extract orally administered to 20 children with recurrent infections of the upper respiratory tract was investigated in a double-blind study. The composition of the peripheral blood mononuclear cells (T and B lymphocytes, monocytes) and some of their biochemical properties (5'-nucleotidase, beta-N-acetyl-glucosaminidase and non… (More)