Biomedical subjects
R O Jones
Publications and source records attributed to R O Jones.
The Canadian certification examination in psychiatry. I: Historical notes.
There has been much criticism of the format and process of the certification examination in psychiatry, and some of this is based on lack of information regarding the history of the specialty certification procedures, the Royal College of Physicians and Surgeons and the Board of Examiners. In this first of three reports the history of the Royal College as the certifying organization is traced, and the relevant College structures are briefly described, including the Specialty Committee on Psychiatry which is instrumental in appointing the clinical examiners. The clinical examiners since 1965 are identified.
Arthur Manning Doyle 1904--1974.
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Differentiation in vitro of sympathetic cells from chick embryo sensory ganglia.
This study was carried out in order to determine what factors control the differentiation of certain neural crest cells in the chick embryo. Emphasis was placed on the morphologically and biochemically divergent sensory and sympathetic pathways of differentiation. Embryos were precisely stage according to Hamburger & Hamilton (1951) and it was observed that sensory ganglia with somites, explanted at stages 21-24, gave rise to cells showing formaldehyde-induced fluorescence in more than 25% of explants. These cells were identical in properties to the fluorescent cells of the sympathetic system of embryos of similar age, and appeared by 12 days in vitro. These fluorescent cells did not appear when somites and sensory ganglia explants were maintained separately. The incidence of fluorescent cells in combined explants was considerably reduced or absent when cultures were maintained for 7 days or less, or when the explants were obtained from stage 25-26 embryos. Furthermore, when neural tube was also included in the cultures, the appearance of fluorescent cells was markedly inhibited. The requirement for somitic tissue to induce fluorescent cells in combined explants can be repalced by forelimb-bud tissue. The origin of these cells and the factors that control their differentiation in vitro are discussed with reference to the neural crest origin of the sensory ganglion, and the possible conditions pertaining in vivo in this region.
In memoriam: Eliza P. Brison, 1881-1974.
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Eliza P. Brison.
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Therapy in canine heartworm disease.
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Differentiation of the mammalian hepatic primordium in vitro. I. Morphogenesis and the onset of haematopoiesis.
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Uptake of 45 calcium and 85 strontium by bone in tissue culture.
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An investigation of pitch discrimination in the normal and abnormal hearing adult.
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Some preliminary observations on the biochemical and biological properties of an epithelial growth factor.
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Ultrastructural analysis of hepatic haematopoiesis in the foetal mouse.
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The responsibility of the voluntary medical associations for future medical manpower.
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Factors affecting the survival of organ cultures of the mammalian pancreas.
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Appraising the total network of services.
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The in vitro effect of epithelial growth factor on rat organ cultures.
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