Cells are the smallest unit of life. Cells in multicellular plants and animals are arranged into tissues, organs and organ systems. Cells. Tissues. Organs. Organ systems. And the organism itself.

An Alabama woman is doing well a record 61 days and counting after receiving a pig kidney, a new milestone in the quest for ...

An Alabama woman has become the longest-living recipient of a pig organ transplant, passing 60 days with a gene-edited kidney and showing no signs of slowing down.

Given the shortage of donor organs, scientists have tried for years to make animal-to-human transplants ... species gap" and "keep the human immune system from immediately attacking the foreign ...

Although it sounds like science fiction, the idea of transplanting animal cells, organs, and tissue into ... that it usually triggers severe immune system reactions in the recipient’s body.

WATCH: How America’s organ transplant system can be improved “It’s like ... comparing them to prior research in animals and a few humans in hopes of spotting an early warning if problems ...

causes immediate organ rejection. The kidney for this experiment came from a gene-edited animal, engineered to eliminate that sugar and avoid an immune system attack. Surgeons attached the pig ...