Complex sentence: The curricula at osteopathic medical schools are similar to those at M.D.-granting medical schools, which focus the first two years on the biomedical and clinical sciences, then two years on core clinical training in the clinical specialties.
Split into simpler sentences: The curricula at osteopathic medical schools are very similar to those at M.D.-granting medical schools. Four years in total length, the first two years of medical school focus on the biomedical and clinical sciences, followed by two years of core clinical training in the clinical specialties.