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Successful immune suppression and modulation is a cornerstone in the hematopoietic cell transplantation (HCT) process. Only a limited number of active immunosuppressive compounds are commonly used in HCT. Despite the relatively limited number of HCTs performed in the United States each year, there is a multimillion dollar market for pharmaceutical immunosuppressants, given the more extensive use of these drugs in solid organ transplantation. As such, an active generic immunosuppressant industry has evolved over the past few years.
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Cutler et al. (2010) studied this question.
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