Paediatric flexible bronchoscopy (F.B.) with bronchoalveolar lavage (B.A.L.) is an increasingly important investigation. Retrospective review of 180 FB performed over a 5 year period by a single operator was undertaken. Common indications included recurrent lower respiratory tract infections (n = 92, 51%), persistent atelectasis (n = 43, 24%), persistent infiltrates (n = 18, 10%) and persistent...

Background: Maternal antibodies, transported over the placenta during pregnancy, contribute to the protection of infants from infectious diseases during the first months of life. In term infants, this protection does not last until the first recommended measles-mumpsrubella vaccination at 14 months in the Netherlands, while these viruses still circulate. The aim of the study was to investigate ...

48 NATURE | VOL 399 | 6 MAY 1999 | www.nature.com after which it was cooled. Typically, during the dynamical evolution individual bonds undergo large-amplitude thermal ̄uctuations, which decrease on cooling. During the room temperature L ˆ 13:50 Ê A CPMD run for N ˆ 28, dissociation occurred at a bond location just outside the entrance to the knot, well separated from the terminal atom where the...