Af ter calling at tention to the lack of observations or of any real effort to determine whether adrenalin or adrenalin-like blood pressure raising substances are present in malignant ren,al hypernephromas, Greer and Wells ( I ) report the results of the examination of two specimens, both of which gave entirely negative results. Examinat ion of the l i terature at my command has not revealed mu...

The immune system during the periparturient period is impaired. At this time the most important factor causing immune-suppression in highly productive cows is metabolic stress resulting from hormonal and metabolic fluctuations, a negative energy balance, shortage of proteins, minerals and vitamins which are required to meet the demands of the fetus as well as the onset of lactation. This stress...