Substitution at codon Ser315 of katG gene, a reliable marker for isoniazid (INH) resistance and proliferate in spite of the loss of cell wall is called an L- form. Unstable L- forms  can convert to normal cells but stble L-forms can not.cell wall - deffective state may be induced spontaneously or through the action of an appropriate agent such as antibiotic interfering with the synthesis of cel...

blood samples were collected from 20 healthy miniature caspian horses at 37 °c. isolation of cryoglobulin was performed based on a standard method in present study. harvested sera were kept at 4 °c for two hours and then examined for cryoglubolin. four serum samples containing precipitate suspicious of containing cryoglobulin were selected. subsequently serum protein electrophoresis was perform...

substitution at codon ser315 of katg gene, a reliable marker for isoniazid (inh) resistance and proliferate in spite of the loss of cell wall is called an l- form. unstable l- forms can convert to normal cells but stble l-forms can not.cell wall - deffective state may be induced spontaneously or through the action of an appropriate agent such as antibiotic interfering with the synthesis of cell...

1. Antisera have been produced in chickens with specific precipitates from Type II pneumococcus horse and rabbit antisera. 2. Specific precipitates from anti-Types I and II pneumococcus horse sera removed the same amount of antibody from the chicken anti-horse specific precipitate serum. Specific precipitates from horse antisera to diphtheria toxin and to crystalline egg albumin removed about o...

1. Rabbit antisera to a Type II pneumococcus specific precipitate from horse serum were tested with fractions prepared by ultracentrifugation and electrophoresis of normal and immune horse serum. 2. In one instance a rapidly sedimenting protein from normal horse serum had nearly the same quantitative antigenic properties toward the anti-antibody rabbit serum as did the purified pneumococcus ant...

1. The injection of horse serum either in small or in large amounts in human beings is always followed sooner or later by the development of hypersensitiveness of the skin to subsequent injections of horse serum. For the development of this reaction serum disease is not essential. 2. The blood serum of most patients who suffer from an attack of serum disease following injections of horse serum ...

1. Attempts to produce anaphylactic shock in white rats by second intravenous or subdural injections of horse serum have failed. 2. It was impossible to demonstrate either by skin reactions or by the uterine reaction that white rats can be sensitized to horse serum. 3. It was not possible to sensitize guinea pigs passively with the serum of white rats presumably immunized to horse serum. 4. In ...

The cytotoxicity of spergualin on cultured L5178Y cells is dependent on the kind of serum contained in culture media. Spergualin has stronger cytotoxicity to L5178Y cells in calf serum (IC50 = 2 micrograms/ml) than in horse serum (IC50 = 60 micrograms/ml). This was thought to be caused by amine oxidase in sera. Because calf serum was rich in amine oxidase and horse serum was very poor. Spergual...