Abstract: A marine turbine and tower combination in which the turbine is mountable on the tower, The turbine has a co-operating member to interact with the tower to enable the turbine to be mounted on the tower in a pre-determined alignment. In one arrangement, the support tower comprises a substantially horizontal thruster plate mounted on top of the tower. The thruster has a central aperture to receive a downwardly directed stud on the turbine the thruster plate providing lateral support for the turbine. The stud has a vertical reaction interface around a lower part of the stud which is supported vertically by a reaction ring mounted on the tower.

Abstract: A method for producing competent gene products in human cells, said method comprising the following steps: Providing a DNA construct in which a gene encoding a protein of interest is operably linked to a modified heat-inducible promoter, Introducing said DNA construct into a human cell line, either by transformation or by transfection to form transformed or transfected host cell lines, Subjecting said transformed or trasnfected cell lines to a transient increase in temperature and permitting the translation to protein to occur after the temperature has been returned to normal growth temperatures of the said host cells, whereby the production of said protein of interest occurs

Abstract: Heat-shock gene control elements from different eukaryotic cells are utilized to provide expression of competent gene products in the same or similar eukaryotic as well as in procaryotic host cells. The control elements can be joined to a suitable eukaryotic replication system to form an expression vector, or may be joined to the gene of interest and introduced directly into the host genome.

Abstract: In the production of proteins of biological interest by means of a stress inducible gene expression unit/eukaryotic host cell system, the transformed cell lines are multiplicated by tumour growing in immunodefficient warm-blooded animals, after which the multiplicated cells are cultured in vitro and subjected to stress, whereby expression occurs in high yield. In vivo multiplication rates of 10.sup.5 -10.sup.6 the innoculated quantity/2 weeks are reported without any loss of the latent inducible expression capacity.