Abstract: A linear luminaire includes a linear channel defining an interior space and a linear light inset configured for being inserted into the channel in the interior space. The light inset includes a cover and a printed circuit board fixed to the cover. The printed circuit board supports a plurality of light emitting diodes. The cover base wall includes a translucent portion. The light emitting diodes are arranged for emitting light through the translucent portion. The cover includes two cover connectors, each configured for being snapped into the channel to hold the cover in the interior space. The cover connectors are on an opposite side of the printed circuit board as the translucent portion.

Abstract: Disclosed is a medium for cultivating tumor cells, comprising the following constituents, as comprised for example in the medium RPMI 1640: (a) fetal calf serum (FCS), (b) penicillin-streptomycin, (c) L-glutamine, (d) transferrin, (e) insulin, (f) human epidermal growth factor (EGF) and (g) ?-TGF. A method for characterizing tumor cells or potential tumor cells, respectively, is also described. Said method includes the culturing of cells in the inventive medium and the two tumor cell lines LNHOS1 and PTHOS1 established by means of the inventive culturing method.

Abstract: Disclosed is a medium for cultivating tumor cells, comprising the following constituents, as comprised for example in the medium RPMI 1640: (a) fetal calf serum (FCS), (b) penicillin-streptomycin, (c) L-glutamine, (d) transferrin, (e) insulin, (f) human epidermal growth factor (EGF) and (g) &agr;-TGF. A method for characterizing tumor cells or potential tumor cells, respectively, is also described. Said method includes the culturing of cells in the inventive medium and the two tumor cell lines LNHOS1 and PTHOS1 established by means of the inventive culturing method.