Andrew Francis Dixon (1868-1936)
نویسندگان
چکیده
Andrew Francis Dixon studied human anatomy and egg [2] cells at the turn of the twentieth century in Ireland and Great Britain. Dixon studied the sensory and motor nervous system of the face, the cancellous bone tissue of the femur, supernumerary kidneys, and the urogenital system. In 1927 Dixon described a mature human ovarian follicle. This follicle, Dixon noted, contained an immature human egg [2] cell (oocyte [3]) with a visible first polar body and the beginnings of the second polar body. Dixon's work helped researchers describe many of the items found in follicles during the production of oocytes, and it helped them identify when, where, and how those items were produced. Based upon his descriptions, later researchers further described polar bodies and investigated their functions.
منابع مشابه
Spontaneous Infection of Guinea-Pigs with a Spirillum, Presumably Spirillum Minus Carter, 1887
McCluskie (1930), Robertson (1930), Francis (1936), and Knowles, Das Gupta and Sen (1936) have noted the occurrence of Spirillum minus in the naturally-infected mouse, Mus musculus. The last-named workers cited an incident in which a wrong diagnosis of rat-bite fever was established on the basis of discovery of spirilla in a white mouse inoculated with the blood of a patient suffering from prol...
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Human and swine influenza viruses were regularly neutralized by their homologous immune sera. However, the sera of animals convalescent from infection with either the swine or human influenza virus possessed little, if any, neutralizing capacity for the heterologous virus. Hyperimmunization of animals against swine influenza virus tended to increase the neutralizing capacity of their sera for h...
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The results of mouse protection tests with 136 human sera and a strain of human influenza virus are described. After the 1st year of life, the sera of approximately half the individuals tested contained sufficient antibody to furnish complete protection to mice. A much higher percentage of the sera obtained from individuals recently convalescent from influenza exerted a completely protective ef...
متن کاملChecklist of Braconinae species of Turkey (Hymenoptera: Braconidae).
The Braconinae (Hymenoptera: Braconidae) species recorded from Turkey are listed, the present total number being 195. Changes with respect to the previous Turkish fauna are briefly annotated and the distributions for all the species in each of the 68 biogeographical provinces are presented. After the publication of our previous fauna, 173 species have been recorded as new to Turkey. Of these, 9...
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