M. Montserrat ([email protected]), M. W. Sabelis, A. M. de Roos and A. Janssen, IBED, Section Population Biology, Univ. of Amsterdam, the Netherlands. MM also at: Inst. de Hortofruticultura Subtropical y Mediterr á nea “ La Mayora ” – Consejo Superior de Investigaciones Cient í fi cas (IHSM UMA CSIC), ES-29750 Algarrobo-Costa, M á laga, Spain. – S. Magalh ã es, Centre for Environmental B...

Background—In addition to its anticoagulant properties, heparin has antiinflammatory eVects, the molecular and mechanistic bases of which are incompletely defined. Aims—The current studies were designed to test the hypothesis that heparin abrogates the expression or function of leucocyte-endothelial adherence molecules which are fundamental to the acute inflammatory response. Methods—The eVects...

Objectives—Leber’s hereditary optic neuropathy (LHON) is a maternally inherited disease characterised by acute or subacute bilateral visual loss in young patients. The primary aetiological event is a mutation in the mitochondrial genome (mtDNA) aVecting in most cases mtDNAencoded subunits of the respiratory chain NADH: coenzyme Q oxidoreductase (complex I). The impaired function of complex I le...

We will discuss some recent theorems relating the space of weighted phylogenetic trees to the tropical varieties of each flag variety of type A. We will also discuss the tropicalizations of the functions corresponding to semi-standard tableaux, in particular we relate them to familiar functions from phylogenetics. We close with some remarks on the generalization of these results to the tropical...

Background—The mechanisms underlying the suppression of somatostatin dependent reflexes in Helicobacter pylori infection are not fully determined. The H pylori product N-methylhistamine and inflammatory mediators such as tumour necrosis factor-á (TNF-á) may be responsible for the alterations in somatostatin release. Aims—To examine the eVect of N-methylhistamine on somatostatin release from cul...

This study investigated mid-vocalic F1 and F2 frequencies as cues to the perception of three Cantonese vowels (/a/, /i/, /Á/) in monosyllabic words produced by ten profoundly hearing impaired and ten normal hearing adolescents. For the control group, there were significant differences in F1 and F2 frequencies among the three vowels as expected. In contrast, the hearing impaired speakers did not...