B16 tumors, which comprise low PDGF-BB paracrine signaling, showed a trend towards decreased PDGFRβ+ pericyte coverage of tumor vessels after treatment with 1-NaPP1 as well as imatinib, whereas no change was observed on NG2+ pericyte coverage ( Figure S2 I-J ).
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Specific targeting of PDGFRβ in the stroma inhibits growth and angiogenesis in tumors with high PDGF-BB expression.
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