Memorial Sloan Kettering Cancer Center - the world's oldest and largest private cancer centre - has devoted more than 130 years to exceptional patient care, innovative research and outstanding educational programmes. It is one of 41 National Cancer Institute-designated Comprehensive Cancer Centers, with state-of-the-art science flourishing side by side with clinical studies and treatment. The close collaboration between its physicians and scientists is one of its unique strengths, enabling it to provide patients with the best care available.