To study the requirement of P-selectin in maintaining neuroblastoma growth, SK-N-BE(2) cells were treated with neuraminidase to cleave cell surface carbohydrates and then incubated with the P-selectin inhibitor, 2-acetamido-4-fluoro-1,3,6-tri-O-acetyl-2,4-dideoxy-D-glucopyranose, for 48 hours. The gene discussed is SELP; the disease is neuroblastoma.