But still, even if you're just planting a placenta, make sure to act in compliance with any federal and local regulations for the disposal of human material. (eonline.com)
The regulations for working with human materials, i.e. DNA, RNA, tissue and human - derived cell - lines, can be complex. (sanger.ac.uk)
Value seeking in the process of voluntary exchange has driven human material progress, but until now it has been all but absent in public education. (educationnext.org)