aguilaroja
Member
- Joined
- Jul 24, 2013
- Messages
- 850
...Ray did speak recently of human cells being "practically immortal", which I thought was a bit interesting. Not sure what he means by that. I thought immortality was just an a priori concept, like infinity.
http://raypeat.com/articles/articles/stemcells.shtml
“In the 1940s, even children discussed the biological discoveries of the 1920s and 1930s, the work in regeneration and adaptation, parthenogenesis, and immortalization. The ideas of J. Loeb, T. Boveri, A. Gurwitsch, J. Needham, C.M. Child, A. Carrel, et al., had become part of the general culture.”
Alexis Carrel - Wikipedia
“Cellular senescence
Carrel was also interested in the phenomenon of senescence, or aging. He claimed that all cells continued to grow indefinitely, and this became a dominant view in the early 20th century.[17] Carrel started an experiment on January 17, 1912, where he placed tissue cultured from an embryonic chicken heart in a stoppered Pyrex flask of his own design.[18] He maintained the living culture for over 20 years with regular supplies of nutrient. This was longer than a chicken's normal lifespan. The experiment, which was conducted at the Rockefeller Institute for Medical Research, attracted considerable popular and scientific attention.[19]
Carrel's experiment by some was never successfully replicated….”
And an opposing view:
What pushes scientists to lie? The disturbing but familiar story of Haruko Obokata
“The problem was, no one else could keep a cell culture alive indefinitely. Lab after lab tried and failed, decade after decade. Because Carrel was a giant in the field of cell research and a Nobel Prize winner, few dared to doubt him. Scientists blamed themselves when their cells died. They assumed that they lacked the master’s skill, that his lab had higher standards than they could reach, that they had somehow exposed their cells to infection or failed to keep them properly nourished. We now know that the reverse was true. Other researchers probably couldn’t duplicate Carrel’s results because they weren’t incompetent or dishonest enough.”