Transmission of specific immunoglobulins from mothers to their offspring via the egg is a common phenomenon in egg-laying vertebrates but the occurrence of this phenomenon in reptiles, especially in colubrid snakes, has not been proven until recently. Thus, the essential biochemical characteristics of antibodies deposited in eggs of Elaphe guttata (Colubridae, Serpentes) were studied after isol...

We evaluated three methods for isolating ferritin for use as a standard, with respect to purity of the products, ease of preparation, and yield. Examination of the respective products by gel filitration on Sephadex G-200 and Sepharose 6B suggested that the preparations isolated by ammonium sulfate and cadmium sulfate precipitation (Method 1) and by ultracentrifugation (Method 2) were homogeneou...

The reverse transcription polymerase chain reaction (RT-PCR), reverse passive haemagglutination assay (RPHA) and agar gel precipitation test (AGPT) were compared for the detection of infectious bursal disease virus (IBDV) in various organs of experimentally infected broilers. RT-PCR and RPHA required a time of 8 and 1 hour, respectively, whereas AGPT showed precipitation reaction at least after...

The alkaline phosphatase of leukocytes from normal subjects, patients with chronic granulocytic leukemia, and patients with reactive granulocytosis have been characterized by means of agarose column chromatography, sucrose density ultracentrifugation, starch gel electrophoresis, Michaelis constant for p-nitrophenyl phosphate, heat inactivation, inhibition by L-phenylalanine, Ouchterlony double ...

receptors was investigated. IgG from Graves’ sera with high thyroid-stimulating antibody activity were diluted in IgG from a pool of normal human serum (so that each sample contained the same amount of total IgG) and incubated overnight at 0°C with labelled thyrotropin and membranes solubilized with 0.5 % Triton. The mixtures were then analysed by chromatography on Sepharose or by poly(ethy1ene...

An acidic peroxidase was extracted from garlic (Allium sativum) and was partially purified threefold by ammonium sulphate precipitation, dialysis, and gel filtration chromatography using sephadex G-200. The specific activity of the enzyme increased from 4.89 U/mg after ammonium sulphate precipitation to 25.26 U/mg after gel filtration chromatography. The optimum temperature and pH of the enzyme...

BACKGROUND Nephrotic syndrome is a condition that is clinically associated with poor outcome. In this study, we compared different techniques of urine sample preparation in order to develop a robust analytical protocol to define the differential urinary proteome of urinary abnormalities compared to nephrotic proteinuria. METHODS We recruited 5 normal control subjects, 16 patients with urinary...

from a total of 600 nose and throat introduction swabs examined for diphtherie, 200 or 33% were positive. cultures were carfully classified on the basis of morphological appearance and biochemical characteristics into gravis, mitis and intermedius groups.  a special tellurite serum agar was used for colonial appearance. neill's broth culture was employed for haemolytic tests. the virulence of e...

A glycoprotein (GP) which is immunochemically and biologically related to human prostatic acid phosphatase (PAP) has been isolated from human seminal plasma by ammonium sulfate precipitation followed by sequential concanavalin A:Sepharose 4B column, anion-exchange chromatography and gel filtration. The purified GP was shown to be homogeneous by disc- and sodium dodecyl sulfate: polyacrylamide g...