A simple, sensitive and rapid spectrophotometric method for the determination of protein concentration in the presence of RNA contaminants is described. Only small spectral differences exist between RNAs from different ...

The serum protein fraction values of Dorper sheep infested with Schistosoma mattheei were determined by cellulose acetate electrophoresis at regular intervals for 15 months. Statistical analyses showed that increases in ƴ ...

Boophilus microplus larvae infected with Babesia bovis were removed from a susceptible ox approximately 72 hours after attachment, triturated and stored in liquid nitrogen refrigerator with dimethyl sulphoxide as ...

Experiments are reported which show that the addition of 4,0% polyethylene glycol (6 000 MW) to liquid cultures of Clostridium welchii Type D , Pasteurella and Vibrio fetus (venerialis) will effectively sediment the bacteria. ...

The diagnostic accuracy of conventional methods for the diagnosis of subclinical mastitis, such as the direct microscopic count (DMC) and electronic cell count (ECC) either used alone or in combination with bacteriological ...

The number of haemolytic plaque forming cells (PFCs) in the spleens of normal mice could not be increased by the injection of nucleic acids. However, when nucleic acids were injected into mice simultaneously with a priming ...

From a review of literature on bovine mastitis published between 1833 and 1973 it is concluded that although herd control has caused a shift of emphasis from the clinical to the subclinical forms, diagnostic criteria have ...

An antigen associated with the somatic cells obtained from mastitic milk, which is also present in the whey and can be used for the diagnosis of mastitis in a radial immunodiffusion (RID) test, has been purified and ...