UMass Chan Medical School may keep the donors remains for a period of one to three years before final disposition is made. Occasionally certain anatomic parts (particularly skeletal and nervous system components) may be retained for longer periods of time, even up to ten years.  In such cases, at the end of their period of use, those tissues are subject to disposition. The donors’ remains or cremains returned for disposition may not include tissues that are being retained longer for ongoing medical research or educational purposes. In those instances, at the conclusion of their use the retained tissues will be cremated and buried at the Pine Hill Cemetery in Tewksbury, MA in a UMass Chan registered grave.