Nigel Williams

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The concentration of carbon dioxide in the atmosphere has reached a record level — increasing by 0.6 per cent last year alone — and methane levels are rising for the first time in a decade according to new results, renewing fears about global climate change prospects. Researchers at the Mauna Loa observatory in Hawaii say that carbon dioxide levels in the(More)
BACKGROUND The aim of the present study was to assess the incidence of wound sepsis following closure of ileostomies and colostomies in our institution. METHODS Circumferential subcuticular wound approximation was used in 51 patients in our institution. Evidence of wound sepsis (assessed by the presence of cellulitis, induration and or purulent discharge)(More)
We describe a 55-year-old female with acquired amegakaryocytic thrombocytopenia who has been successfully treated with antithymocyte globulin. In-vitro studies assessing megakaryocytopoiesis in the presence of the patient's plasma and peripheral blood adherent cells showed normal or increased stimulation. This patient brings to 30 the number of adult cases(More)
1 The AES has launched a new opportunity to recognize student members who author technical papers. The Student Paper Award Competition is based on the preprint manuscripts accepted for the AES convention. Forty-two student-authored papers were nominated. The excellent quality of the submissions has made the selection process both challenging and(More)
BACKGROUND Parenting and pregnancy in the context of drug use is a contentious topic, high on the policy agenda. Providing effective support to parents who are opioid dependent, through early intervention, access to drug treatment and parenting skills training, is a priority. However, little is known about opioid dependent parents' experiences and(More)
The progenitor cells of neutrophil granulocytes and macrophages which are able to proliferate and differentiate in vitro (CFU-c) form a heterogeneous population. By the use of specific colony stimulating activities and cell separation by equilibrium density centrifugation, three subpopulations of CFU-c can be detected. These three CFU-c are characterized by(More)
Human megakaryocyte progenitors were cloned in semisolid agar from unfractionated bone marrow cells and recognized by their capability of producing discrete megakaryocyte colonies. Megakaryocyte colonies were identified in situ by immunofluorescence, using antibodies against platelet glycoproteins Ib, IIb, and IIIa, as well as von Willebrand factor (vWf),(More)
The orang-utan could be virtually extinct within five years after it was discovered that the animal’s rainforest habitat is being destroyed even more rapidly than had been predicted five years ago. A United Nations Environment Programme (UNEP) report has found that illegal logging and fires have been overtaken as the primary cause of deforestation by a huge(More)
High-proliferative-potential colony-forming cells (HPP-CFC) have been described as primitive murine macrophage progenitors. We have previously demonstrated the existence of two populations of HPP-CFC: one population, termed HPP-CFC-1, is stimulated by the combination of macrophage colony-stimulating factor (CSF-1) plus haemopoietin-1 (H-1) and actively(More)
The push to develop commercially viable cloned animals as a source of organs for human transplants ratcheted up another success last month, but veteran Dolly, the cloned sheep has raised some doubts about the wider issues of cloning. Two teams produced piglets cloned from adult cells in which a copy of a gene controlling production of a particular(More)