They are also relatively simple to treat, compared with more complex diseases such as cancer.

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What stage at a given time, what genes are turned on, just how much Mendelien traits are involved in complex diseases ?

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"Medical innovation will have to focus on incremental advances against complex diseases, " said Karen Katen , Pfizer's vice chairman and Human Health president.

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In addition, we have invested in realistic, full-body adult, wireless patient simulators that can reproduce complex diseases that students may not have an opportunity to experience in rural hospitals.

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Such thinking permits the design of drug molecules to treat complex human diseases or to modify other difficult biological disorders.

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However, it is difficult to identify the causative agents in complex chronic diseases, which can take many years to develop.

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"Mitochondrial myopathies are a group of complex and severe diseases, " she said.

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They provide complex services for the thousands of diseases, conditions, and injuries that afflict us.

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But scientists are now finding that most common diseases are far more complex.

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One high-impact provision being debated is 12 years of data exclusivity protection for biologics, complex medicines that treat debilitating chronic diseases.

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