منابع مشابه
Expression of Lewis(x), sialylated Lewis(x), Lewis(a), and sialylated Lewis(a) antigens in human lung carcinoma.
One hundred and five cases of various human lung neoplasms were studied immunohistochemically using monoclonal antibodies recognizing the antigens, Le(x), sialylated Le(x) (SLEX), Le(a), and sialylated Le(a) (SLEA). Of the 92 lung cancers examined for antigen expression SLEX was detected in 57% (52 cases), Le(x) in 42% (39), SLEA in 36% (33), and Le(a) in 23% (21). None of these antigens were e...
متن کاملLewis Wolpert
Lewis Wolpert is Professor of Biology as Applied to Medicine at University College London. He originally trained as a civil engineer in South Africa, but changed to research in cell and developmental biology in 1955. His main contributions are related to morphogenesis and his concept of positional information. He was for four years Chairman of the Committee for the Public Understanding of Scien...
متن کاملKieran Lewis
©AsiaPacific MediaEducator Issue No.11 July Dec. 2001 T paper discusses some fundamental assumptions about pluralism in the Australian print media. Pluralism, the number of print media outlets available to the public, and known as structural diversity, can be considered as one of two elements of media diversity. The other is the variety of views presented by those outlets, known as content dive...
متن کاملRecent progress in Lewis acid–Lewis base bifunctional asymmetric catalysis*
Two enantioselective cyanation reactions, the Strecker reaction of ketoimines and the Reissert reaction of pyridine derivatives, promoted by Lewis acid–Lewis base bifunctional asymmetric catalysts are described.
متن کاملScales of Lewis basicities toward C-centered Lewis acids (carbocations).
Equilibria for the reactions of benzhydryl cations (Ar2CH(+)) with phosphines, tert-amines, pyridines, and related Lewis bases were determined photometrically in CH2Cl2 and CH3CN solution at 20 °C. The measured equilibrium constants can be expressed by the sum of two parameters, defined as the Lewis Acidity (LA) of the benzhydrylium ions and the Lewis basicity (LB) of the phosphines, pyridines,...
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ژورنال
عنوان ژورنال: BMJ
سال: 2007
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.39069.526586.fa