Complex sentence: By the late 1940s, doctors, hospitals and public health centers throughout the country routinely treated diagnosed syphilis with penicillin, but the Tuskegee experiment continued to avoid treating the men who had the disease.
Split into simpler sentences: By the late 1940s, doctors, hospitals and public health centers throughout the country routinely treated diagnosed syphilis with penicillin. However, the Tuskegee experiment continued to avoid treating the men who had the disease.