Finally, assessment of LYN protein levels in these cells by western blotting showed that Lynfl/wt tumour cells had significantly less protein than Lynwt/wt tumour cells, but again, although some Lynfl/fl tumour cells had low LYN protein levels, others had levels of LYN comparable to those in the wild-type cultures (Fig. 3I). The gene discussed is LYN; the disease is neoplasm.