 Another federal court on another case used "illusive" to describe concerns about privacy of patients and did not recognize the risks of re-identification.The Notice of Proposed Rule Making, published by the Common Rule Agencies in September 2015, expanded the umbrella term of "human subject" in research to include biospecimens, or materials taken from the human body - blood, urine, tissue etc.This mandates that researchers using biospecimens must follow the stricter requirements of doing research with human subjects.