ON THE ANTIGENICITY OF DIPHTHERIA TOXOID PART III THE IMMUNIZING POTENCY OF DIPHTHERIA TOXOID FRACTIONS ISOLATED AT LOWER AMMONIUM SULFATE CONCENTRATION
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چکیده
منابع مشابه
The Purification and Concentration of Diphtheria Toxoid
By precipitation with acetone at 4 degrees C. a refined diphtheria toxoid was obtained as a dry powder, readily soluble in aqueous solutions. The powder itself appears to be stable. When dissolved in half the original volume of physiological salt solution, the toxoid remained stable, in the cold room, for a period of 7 months. Only toxoids should be used which have been completely detoxified by...
متن کاملOPTIMIZATION OF DIPHTHERIA TOXOID PRECIPITATION BY USING SATURATED AMMONIUM SULPHATE IN ORDER TO IMPROVE DIPHTHERIA VACCINE
سابقه و هدف: کورینه باکتریوم دیفتریه باکتری هوازی و بیهوازی اختیاری است. مهمترین گونه از خانواده کورینه باکتریاها، عامل بیماری دیفتری است که به وسیله توکسین خود، بیماری دیفتری را ایجاد میکند. آمونیم سولفات نمکی معدنی است که از آن برای ترسیب و خالصسازی پروتئین ها استفاده میشود که با افزایش مقدار نمک حلالیت پروتئینی کم شده و پروتئین ها به واسطه قطعه های هیدروفوب خود، بههم پیوسته و رسو...
متن کاملOn the antigenicity of diphtheria toxoid. IV. The usefulness of the quantitative Schick test as the response in the assay of immunizing potency.
Several diphtheria toxoid preparations were fractionated by salting out with ammonium sulphate at various concentrations into several fractions possessing evidently different immunizing potency. The fractions of lower solubility were proved to possess less potency than those of higher solubility when the comparison was performed at the same Lf dose6). This difference between the potency of thes...
متن کاملPreparation and Evaluation of Diphtheria Toxoid-Containing Microspheres
Preparation of chitosan (CS) microspheres as a novel drug delivery vehicle for intranasal immunization using high, medium and low CS molecular weight (MW) was investigated in this study. Diphtheria toxoid (DT) was used as a model antigen. The emulsion-solidification method was adopted for microencapsulation of DT. In the first step, following the purification of semi-crude DT by the ion-exchan...
متن کاملPreparation and Evaluation of Diphtheria Toxoid-Containing Microspheres
Preparation of chitosan (CS) microspheres as a novel drug delivery vehicle for intranasal immunization using high, medium and low CS molecular weight (MW) was investigated in this study. Diphtheria toxoid (DT) was used as a model antigen. The emulsion-solidification method was adopted for microencapsulation of DT. In the first step, following the purification of semi-crude DT by the ion-exchan...
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ژورنال
عنوان ژورنال: Japanese Journal of Medical Science and Biology
سال: 1952
ISSN: 0021-5112,1884-2828
DOI: 10.7883/yoken1952.5.239