Complex sentence: Roskams has made important contributions to the field of regeneration-focussing on how cells interact during brain development-and is a widely-sought expert in how neural stem cells and specialized glia in the brain can aid in promoting nervous system development and repair.
Split into simpler sentences: Roskams has made important contributions to the field of regeneration, focusing on how cells interact during brain development. She researches how neural stem cells and specialized glia in the brain can aid in promoting nervous system development and repair.