[The influence of zink and lead on the formation of antibodies (author's transl)].

Female NMRI-mice were injected intraperitoneally and subcutaneously with zinc chloride and lead chloride as well as with a mixture of both. The mice were also immunized with foreign-proteins. To demonstrate the interconections, the heavy metals and the proteins were injected separately, as was the heavy-metal-protein-suspension.

[Investigations on the combined effect of zinc and lead (author's transl)].

The effect of zinc and the combined effect of zinc and lead on the Ala-D of the erythrocytes were experimentally followed in vivo and vitro. It was demonstrated that the zinc effect on the Ala-D is a function of the zinc-concentrate in blood. It was hence traced that ZnCl2 dosis up to 500 mug/ml blood raises the activity of Ala-D.