. . . . . . . . . . . . "[Since the brain tissue microenvironmental niche is a prerequisite for expression of the stem cell marker CD133 antigen in brain tumors, we investigated the invasion mechanisms specific to CD133(+) U87 glioblastoma cells in response to lysophosphatidic acid (LPA) and sphingosine 1-phosphate (S1P), two circulating bioactive lysophospholipids and potent inducers of cancer.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2014-02-25"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2014-10-02T12:33:35+02:00"^^ . . . . . . . . . . . "v2.1.0.0" . "v2.1.0" .