Production of passive cutaneous anaphylaxis (PCA) and reversed PCA by rat IgE antibody in the mouse

Summary Although IgE antibody is generally characterized as a homocytotropic antibody, it has been well known for some time that mouse IgE antibody causes potent sensitization of rat skin for PCA. The present study clearly shows, the reciprocal cross-sensitization of mouse skin with rat IgE molecules. PCA and RPCA were produced by rat IgE antibody in an inbred mouse strain, DS/Shi, though not in C3H/HeShi, C57BL/6JShi and BALB/cCrj strains. Sensitization of DS/Shi mouse skin for PCA with rat IgE antibody was comparable in sensitivity with that of rat skin, but lasted only for a short term in comparison with the long persistence in rat skin.     

Studies on the fissure of cholesterol-pigment-calcium stone (multiple faceted stone)

Summary Multiple faceted gallstones with an internal fissure have been examined by gas chromatography-mass spectrometry. In vivo. the fissures probably contain only water vapor. The fissure may be produced by dehydration or water trapping during the stone formation process.