A real-time RT-PCR method for the detection of the API2-MLT fusion resulting from t(11;18) was performed on RNA extracted from frozen tissue sections.     ///    "The product of the t(11;18), an API2-MLT fusion, is an almost exclusive finding in marginal zone cell lymphoma of extranodal MALT-type.. "    ///    "The API2-MLT fusion was detected in 12 cases, which were all extranodal MALT-type lymphomas of the stomach, except for one case. "