Twort-d'Herelle phenomenon

the phenomenon of transmissible bacterial lysis (bacteriophagia). When to a broth culture of typhoid or dysentery bacilli there is added a drop of filtered broth emulsion of the stool from a convalescent typhoid or dysentery patient, complete lysis of the bacterial culture will occur in a few hours. If a drop of this lysed culture is added to another culture of the bacilli, lysis will take place exactly as in the first. A drop of this culture will then dissolve a third culture, and so on through hundreds of transfers. d'Herelle attributed this phenomenon to the action of an ultramicroscopic parasite of bacteria, which he named the bacteriophage. See bacterial virus, under virus.

Medical dictionary. 2011.

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  • Twort-d'Herelle phenomenon — Twort d He·relle phenomenon (twortґ dĕ relґ) [Frederick William Twort, English bacteriologist, 1877–1950; Fйlix Hubert d Herelle, Canadian bacteriologist in France, 1873–1949] see under phenomenon …   Medical dictionary

  • d'Herelle phenomenon — d He·relle phenomenon (də relґ) [Fйlix Hubert d Herelle, Canadian bacteriologist in France, 1873–1949] Twort d Herelle phenomenon; see under phenomenon …   Medical dictionary

  • d'Herelle phenomenon — Twort d Herelle p …   Medical dictionary

  • phenomenon — 1. A symptom; an occurrence of any sort, whether ordinary or extraordinary, in relation to a disease. 2. Any unusual fact or occurrence. [G. phainomenon, fr. phaino, to cause to appear] adhesion p. a p. manifested by the adherence of antigen… …   Medical dictionary

  • Twort — Frederick W., British bacteriologist, 1877–1950. See T. phenomenon, T. d Herelle phenomenon …   Medical dictionary

  • Twort , Frederick William — (1877–1950) British bacteriologist Twort, a doctor s son from Camberley in Surrey, qualified in medicine in 1900 and after various appointments in London hospitals became professor of bacteriology at London University. His most important… …   Scientists

  • d'Herelle — Felix H., Canadian physician and bacteriologist, 1873–1949. See d Herelle phenomenon, Twort d Herelle phenomenon …   Medical dictionary

  • Félix d'Herelle — Born April 25, 1873 Montreal …   Wikipedia

  • bacterial virus — n BACTERIOPHAGE * * * a virus capable of producing transmissible lysis of bacteria; the virus particle attaches to the bacterial cell wall and viral nucleoprotein enters the cell, resulting in the synthesis of virus and its liberation on physical …   Medical dictionary

  • Phage monographs — Bacteriophage (phage) are viruses of bacteria and arguably are the most numerous organisms on Earth. The history of phage study is captured, in part, in the books published on the topic (but see also phage meetings). Presented is a list of 100… …   Wikipedia

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