Abstract: Synthetic magnesium aluminosilicate consisting essentially by weight of 47-57% SiO.sub.2, 9-11% Al.sub.2 O.sub.3, 3-5% MgO, 1-3% CaO, and less than 5% Na.sub.2 O, balance water to total 100% calculated analytically.A process for manufacturing, comprising the steps ofstirring into a first aqueous solution, containing the corresponding amounts of magnesium sulfate and aluminum sulfate, a second aqueous solution containing sodium silicate and sodium hydroxide.thereafter adding a third aqueous solution containing a corresponding amount of calcium chloride,continuing the stirring,filtering off and washing the precipitate, anddrying the precipitate at a temperature below 100.degree. C.,or, instead of adding the third aqueous solution containing calcium chloride, by using lime water in the manufacturing process and for washing.

Abstract: Lysates derived from strains of Escherichia coli, especially wherein said lysates are derived from at least one of the strainsNCTC 8603, 8621, 8622, 8623, 9026, 9111, 9119, 9707, 9708,I-081, I-082, I-083, I-084, I-085, I-086, I-087, I-088, I-089are useful for treating rheumatoid arthritis.

Abstract: Diethylamine persilate of formula ##STR1## can be used against gastric and duodenal ulcers.