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We have demonstrated previously the involvement of certain glycosphingolipids (GSLs) in ‘contact inhibition’ (dependent on cell‐to‐cell contact) of cell growth. Here, we examined the roles of specific GSLs in contact inhibition of the human epithelial cell line MCF10A. Contact‐inhibited cells show increased expression of the ganglioside GD3 and the globo‐series GSL Gb3, and of the mRNAs for the corresponding...