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.

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 ...

An all-in-one two-photon and/or confocal microscopy system called intravenous microscopy (IVM) was created and refined for in ...

The controversy stems from the daunting immunological barrier to transplanting organs between disparate species and from the possibility that an animal organ or tissue might transmit an infectious ...

A research team in Japan says it has successfully transplanted a pig kidney into a monkey, marking a step toward advancing to ...

Transplanting animal organs into humans is becoming more common ... because patients receiving a new organ have to take immune-system-suppressing drugs to prevent their bodies from rejecting ...

from the threat of rejection — the animal organs that are used are genetically modified to reduce the risk of an unfavorable rejection by the transplant recipient’s immune system — to the ...

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.

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 ...