[Echinococcus multifocal. Epidemiology, clinical findings and treatment]. / Echinococcus multilocularis. Epidemiologi, klinik og behandling.

Infection with the fox dwarf tapeworm, Echinococcus multilocularis, has for the first time been found in a fox in Denmark, and E. multilocularis infection is therefore now a possible diagnosis in Danish patients. This paper reviews the life cycle, epidemiology, clinical symptoms, diagnosis, and treatment of E. multilocularis infections.

Dimensional approaches to scaling experimental ecosystems: designing mousetraps to catch elephants.

Enclosed experimental ecosystems (mesocosms) are small relative to their natural counterparts, are typically operated for short durations relative to the timescales of a number of important ecological processes, and also often have reduced biological and physical complexity relative to nature. These reductions in time, space, and complexity scales have been cited as sources of unrealistic ecological behavior within mesocosms and raise questions about extrapolating results from mesocosms to nature. Dimensional analysis, a technique widely used by engineers to create scale models, uses compensatory distortion as a means of maintaining dynamic similarity in properties and relationships of interest. Although biological parameters are generally less controllable than physical ones, a variety of dimensional approaches can be taken to maintain such key ecological properties as effective habitat size, environmental variability, vertical and horizontal gradients, interactions among habitats, and control of experimental artifacts. To date, application of dimensional approaches to mesocosm design has been largely intuitive and idiosyncratic. We argue that a more explicit, systematic, and quantitative approach will increase realism and may also provide a critical means of developing, testing, and advancing our understanding of scaling relationships in nature.

[Plasmodium falciparum malaria in a pregnant woman six months after stay in an endemic area]. / Plasmodium falciparum-malaria hos en gravid kvinde seks måneder efter ophold i et malariaområde.

A case of P. falciparum malaria in a 22 year old West African primigravida with no possible exposure to malaria seven months before detection and six months before the infection became symptomatic is presented. We connect the altered immunity against malaria induced by the pregnancy with the presence of subclinical low-level persistent parasitaemia in semi-immune individuals from areas with intense malaria transmission.

Relationships between oxygen and carbon dioxide tensions and acid-base balance in arterial blood and in medullary blood from long bones in dogs.

By means of an invasive technique the relations between arterial and medullary gas tensions PO2 and PCO2), and arterial and medullary acid-base balance (pH and standard bicarbonate) were determined in long bones in seven anaesthetized dogs. A semilogarithmic correlation was found between the arterial oxygen tension and the oxygen tension in the medullary blood. Between the arterial carbon dioxide tension and the medullary blood carbon dioxide tension a linear correlation was demonstrated A linear correlation was also found between arterial pH and standard bicarbonate values and the corresponding values obtained from medullary blood. With regard to the parameters investigated no difference was demonstrated between epiphyseal, metaphyseal or diaphyseal medullary blood.