Haptoglobin concentration in blood sera of hoofed mammals in captivity.

There were 151 serum samples of the zoological species of hoofed animals from the Bovidae, Cervidae and Equidae families examined for the presence of haptoglobin (Hp). In the majority of samples the Hp levels were close to the ones defined in the related species of domestic animals (86.49, 52.

Bovine early pregnancy factor (EPF) activity dependent on a 67-kDa polypeptide.

Maternal bovine EPF activity can be reduced to one single polypeptide enriched and identified from serum of cows in early pregnancy. The relative molecular weight of this active polypeptide was estimated at 67 kDa. This bovine EPF was labelled by 125I and peroxidase.

Electrorotation of lymphocytes--the influence of membrane events and nucleus.

Electrorotation--the spin of cells in rotating high frequency electric fields--has been used to investigate properties of human peripheral blood lymphocytes. The rotation spectra of lymphocytes deviate from those of single shell spheres. The deviations are caused by the electrical properties of the nucleus in the cell interior.