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Results for “Flocculation Tests”

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PubMed1966

A study of tuberculosis antibodies by bentonite flocculation.

Bentonite particles sensitized with concentrated human Old Tuberculin were used for detection of circulating antibodies to M. tuberculosis in human sera.There was no sharp distinction between the titres of patients with active and inactive tuberculosis, but progressively higher antibody titres accompanied increased severity of infection. The sera of 95.3% of the patients studied had a titre of 1:8 or higher. This level was considered to be the minimal significant titre indicative of the presence of metabolically active bacilli in old and new lesions. Tuberculin-negative controls and syphilitic sera were negative. A common zone of incidence in the 1:8-1:32 range was found where differentiation between tuberculin-positive healthy people and patients with tuberculosis was not possible; however, titres of 1:64 or more were found only in tuberculous patients. The antibody under study is heat-labile.

Antibodies, Bacterial↗
PubMedDate not supplied

Studies on the antigenic structure of tetanus toxin.

The isolation and purification of split-products from tetanus toxin after freezing is reported. Antigenically defective and non-defective fragments exhibiting reduced molecular weights with respect to that of intact toxin were investigated as to their biological and immunological properties. The results obtained are discussed in relation to other data from the literature.

Animals↗
PubMed1971

Syphilis.

This is the transcription of the regular teaching conferences in Infectious Diseases held weekly at Horbor General Hospital, Torrance. The transcription was edited by Drs. Jerrold Turner, Irwin Ziment and Lucien B. Guze.

Adult↗