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Biomedical subjects

A Chagnon

Publications and source records attributed to A Chagnon.

At least 127 records · Page 7Linked to original sources

Studies on infectious mononucleosis: a progress report.

The authors recently reported the occurrence of an unstable cytopathic effect and a "first passage" interference phenomenon in tissue culture as well as the detection of antigens by immunofluorescence following inoculation of material from patients with infectious mononucleosis.These tissue cultures have since been discovered to be contaminated by a bacterial L-form. The part played by the contaminant in the results obtained has been determined: it can explain only one of the patterns shown by immunofluorescence.The same labile interference phenomenon has been observed by two independent investigators.

Humans↗

Studies on infectious mononucleosis: I. Cytopathic agents and immunofluorescence studies.

Viral studies were carried out on throat swabs, rectal swabs and washed white blood cells from 27 cases of infectious mononucleosis (positive Paul-Bunnell-David-sohn test), and from 22 controls.Four cytopathic agents were isolated in the test group, two of which were readily subcultured for at least three successive passages.Three cytopathic agents were recovered in the control group, two of which have been identified as adenovirus type 5 and adenovirus type 3. The unidentified agents tested so far are sensitive to ether and to pH 3. The results of acridine-orange staining and the immunofluorescence technique, using a conjugated control serum and two conjugated convalescent infectious mononucleosis sera, indicate that the isolated agent or agents in the test group are RNA-type agents with a cytoplasmic cycle of development. The overall results of this study lead the authors to suspect a respiratory syncytial-like myxovirus as the as yet unidentified agent which they recovered.

Adenoviridae↗