Christer Erséus

Borås is a city and the seat of Borås Municipality, Västra Götaland County, Sweden. It had 66,273 inhabitants in 2010.

The University of Gothenburg is a university in Sweden's second largest city, Gothenburg. Founded in 1891, the university is the third-oldest of the current Swedish universities and, with 37,000 students and 6,000 staff members, it is one of the largest universities in the Nordic countries.

The Swedish Museum of Natural History, in Stockholm, is one of two major museums of natural history in Sweden, the other one being located in Gothenburg.

The Clitellata are a class of annelid worms, characterized by having a clitellum - the 'collar' that forms a reproductive cocoon during part of their life cycles. The clitellates comprise around 8,000 species. Unlike the class of Polychaeta, they do not have parapodia and their heads are less developed.

Cestoda is a class of parasitic worms in the flatworm phylum (Platyhelminthes). Most of the species—and the best-known—are those in the subclass Eucestoda; they are ribbon-like worms as adults, known as tapeworms. Their bodies consist of many similar units known as proglottids—essentially packages of eggs which are regularly shed into the environment to infect other organisms. Species of the other subclass, Cestodaria, are mainly fish infecting parasites.