Description
Literature-mined gap from: “Orally Administered Rhamnan Sulfate from Monostroma nitidum Significantly Inhibits Melanoma Metastasis in Lungs and Aorta of Mice Implanted with B16 Cells” (Hiramoto K et al., Mar Drugs 2026; PMID 42042201). The paper signals unresolved mechanistic uncertainty in a cancer context.