As far as could be determined he had never received medication containing intrinsic factor. In the fall of 1965 ... A xylose tolerance test showed 4.6 gm. excreted in 5 hours after a 25-gm.

If so, it is of interest to determine whether the effect of steroids can be obtained only in patients in whom there was a demonstrable serum intrinsic-factor antibody. It is further of interest to ...