FASLG and neoplasm: FasL has been detected in several tumours of varying origin, including colon (Okada et al, 2000), breast (Mottolese et al, 2000; Reimer et al, 2000), liver (Ito et al, 2000), gastric (Zheng et al, 2003) and lung carcinoma (Niehans et al, 1997; Volm and Koomagi, 2000), astrocytoma (Saas et al, 1997), esophageal (Shibakita et al, 1999), renal (Kim et al, 2000) and ovarian tumours (Munakata et al, 2000; van Haaften-Day et al, 2003).