BACKGROUND Preterm birth, the birth of an infant prior to 37 completed weeks of gestation, is the leading cause of perinatal morbidity and mortality. Preterm infants are at greater risk of respiratory, gastrointestinal and neurological diseases. Despite significant research in developed countries, little is known about the causes of preterm birth in many developing countries, especially China. ...

The intra-European migration flows have fostered debates about the intentions of migrants to settle in their destination country or return countries origin. Based on a quantitative analysis survey data (N = 1391), this article presents typology patterns among from Latvia Nordic countries. Using two dimensions—attachment and attachment origin—the identifies character...

The regions from positions 1391 to 1545 and 1620 to 1865 (Escherichia coli numbers) of the 23S ribosomal DNA sequences have been analyzed for a number of Pseudomonas fluorescens and P. putida isolates. Variability was observed only in three smaller regions from positions 1484 to 1508, 1531 to 1542, and 1714 to 1748, corresponding to helices 58, 59, and 63, respectively, where up to 53% dissimil...

22. Grimson BS, Robinson SC, Danford ET, Tindall GT, Greenfield JC Jr: Effect of serotonin on internal and external carotid artery blood flow in the baboon. Am J Physiol 216: 50-55, 1969 23. Abboud FM, Eckstein JW: Comparative changes in segmental vascular resistance in response to nerve stimulation and to norepinephrine. Circ Res 18: 263-277, 1966 24. Abboud FM: Vascular responses to norepinep...

3 Ginsburg, H., and L. Sachs, Virology, 13, 380 (1961); Ginsburg, H., and L. Sachs, J. Natl. Cancer Inst., 27, 1153 (1961); ibid., 28, 1391 (1962). 4Osato, T., E. A. Mirand, and J. T. Grace, Jr., Nature, 201, 52 (1964). 6 Prigozhina, E. L., and A. A. Stravovskaya, Acta Virol., 8, 277 (1964). 6 Sinkovics, J. G., and C. D. Howe, J. Infect. Diseases, 114, 359 (1964). 7Peries, J., J. P. Levy, M. Bo...