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animal tissues, cells, and their derivatives are often transferred to humans, whether by using insulin produced from pig or cow pancreases, injecting flu vaccines cultured in fertilized chicken eggs, or transplanting heart valves from pigs into humans.
a menudo se transfieren tejidos, células y sus derivados de animales a humanos, ya sea insulina producida a partir de los páncreas de cerdos o de vacas, por la inyección de vacunas contra la influenza cultivadas en huevos de gallina fertilizados o el transplante de válvulas del corazón de cerdos a humanos.
