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L1 inhibits proliferation of bipotential (A-C) and multipotential (D) clones. The number of cells within individual clones was determined after clones were maintained for 15 d on PLL, laminin, or L1 substrates. Diagrams indicate the averaged number of cells per clone. Values are means + SEM. *p < 0.05 versus the corresponding clone type on laminin and PLL.
