“…As known, in pernicious anaemia the intestinal bacterial flora moves orally with the result, that bacteria normally occurring only in the distal part of the ileum are to be found in the normally bacteria-free stomach (11). It has also been claimed that such a shift in the bac terial flora can impair the absorption of vitamin B12 (1,20,21,24,52), and attempts have been made to treat pernicious anaemia by changing the bacterial flora. Thus Baumgartel tried to dislodge the B12 consuming micro-organisms by administration of lactic acid bacteria and thereby produced an improvement in the blood values (6).…”