A silicon polymer material, which has a silicon polymer backbone with chromophore groups attached directly to at least a part of the silicon atoms, the polymer further exhibiting carbosilane bonds. A reaction gas is supplied to a surface of a heated substrate in a direction parallel or oblique to the substrate. The oligonucleotides according to the present invention are specifically suited for the detection of EBV gene expression in circulating peripheral blood cells, in human tissue samples and thin sections thereof using \u201cin solution\u201d amplification or \u201cin situ\u201d amplification techniques and in other biological samples potentially containing EBV-infected cells.