Which cells identify as the ones most likely to hold the key to increased human longevity and vitality and how might this work?
Describe one alternative to cloning that the authors mention
The cells that are believed to hold the key to increased human longevity and vitality are called stem cells. Stem cells have the unique ability to differentiate into various types of cells in the body and have the potential to regenerate damaged tissues and organs.
One alternative to cloning mentioned by the authors could be cellular reprogramming. Cellular reprogramming involves taking adult cells and manipulating them to revert to a more youthful, pluripotent state. This can be done by introducing specific reprogramming factors into the cells, which changes their gene expression patterns and allows them to develop into different cell types. By reprogramming cells to a pluripotent state, scientists hope to rejuvenate and repair damaged tissues and organs, ultimately enhancing vitality and increasing lifespan. This technique bypasses the ethical concerns associated with cloning, as it does not involve creating a complete clone of an individual.