<unk>  is biological tissue used for organ transplantation and medical research, particularly cancer research. When it is used for research it is a biological specimen. Such tissues and organs may be referred to as implant tissue, allograft, xenograft, skin graft tissue, human transplant tissue, or implant bone. Tissue is stored in tissue establishments or tissue banks under cryogenic conditions. Fluids such as blood, blood products and urine are stored in fluid banks under similar conditions.
Biomedical tissue
Biomaterial
Surgical instrument
Biological specimen
Human body
Wound
Soft tissue
Graft 