Although NIH statistics are useful for identifying vigorous biomedical research conducted in traditional medical school departments, some PhDs are awarded by non-traditional medical school departments or graduate programs. This is particularly true for subjects that are interdisciplinary in nature, such as Developmental Biology. While some institutions have Developmental Biology Ph.D. programs that draw participating faculty from traditional medical school departments, the NIH doesn't publish annual statistics on these types of interdisciplinary Ph.D. programs.