Iodine concentration of milk in a dose-response study with dairy cows and implications for consumer iodine intake.

Most feed is poor in iodine and iodine supplementation of cow's diets must guarantee milk iodine concentrations for humans that contribute to prevention of the deficiency and minimize the risk of exceeding an upper limit of iodine intake. Five Holstein cows were fed four iodine doses (via Ca(Iota O(3))(2).6H(2)O).

[Morphometric and densitometric studies on the ultrastructure of endothelial cells in capillaries in tumor bearing rats].

The permeability of tumor capillaries to higher molecular substances like albumin and beta-globulin is increased. The comparison of permeability is associated with a modification of the ultrastructure of the capillary wall, especially of endothelial cells and their nuclei. On micrographs of blood capillaries Zajdela-Ascites-Hepatoma pregnanted rats we've studied a) morphometrically the surface and the volume of endothelial cell nuclei in relation to the time after tumor implantation, b) densitometrically the Hetero-Euchromatin-ratio in the nuclei of the same cells in relation to tumor time too.