Presents research developments on cancer treatment and diagnosis in the United States as of February 1995. Use of toluidine blue for temporary staining of oral cancerous lesions; Approval of vinorelbine tartrate by the Food and Drug Administration for the treatment of non-small cell lung cancer. INSETS: Cancer rates for U.S. whites, 1973-1991, by Susan S. Devesa.;Side glance: A human breast cancer cell..