The contrasting effects of estrogen upon the pubic symphysis and long bones in mice is well known.'0 `` "' At the time new bone was forming in the long bones the number of reticular fibers increased in the marrow.' Because observations were made only after 30 days following implantation of estrone, it was not possible to determine whether these fibers were associated with the formation of new t...

Sulphide was determined spectrophotometrically at 628 nm and pH 6.7 based on its catalytic reduction of toluidine blue in the presence of Se(IV) using a flow injection system. After optimization of the measuring conditions the calibration curve was found linear up to 25 mg/mL and the detection limit was 0.3 mg/mL (30 mL injections). The ...

An improved method for the direct counting of basophil leucocytes from venous or capillary blood is described. The method is based upon the use of cetylpyridinium chloride to lyse the erythrocytes and render the muco-polysaccharides of the granule insoluble. Aluminium sulphate is used to mordant toluidine blue to the granules. Our knowledge of the role of the basophil leucocytes in disease has ...