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.

The need for transplant organs is immense and growing. Some scientists think animal organs might be a good way to increase ...

The research offers hope to tens of thousands of patients with kidney failure who are on a long waiting list for an organ ...

The first clinical trials using organs from genetically modified pigs offer hope to patients with kidney failure, who face a ...

A study revealing safety and ethical concerns over using animal organs in lifesaving ... altered pigs whose organs would not be rejected by the human immune system could help solve the current ...

A bloodlike cocktail pumped through pigs’ vascular systems one hour after their deaths effectively ... tells New Scientist that the best way to gauge the health of the animals’ organs would be to ...

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 ...