In 1931 Spemann ground the primary organizer and implanted it again. The grinding did not change the results of the experiment; the second embryo was formed anyhow. In 1933 Spemann and his scientists repeated the same experiment but this time they boiled the primary organizer before. But despite boiling a second embryo was formed. It was shown that the cells could not be influenced. In 1935 Spemann got the Nobel Prize for the discovery of the primary organizer.
Dr. Othman Al Djilani and Sheik Abd Majid Azzandani did some experiments on the tailbone in 2003/Ramadan1424 in the Sheik Abd Majid Azzanidanis house in Sana'a (Yemen). One of the two vertebras of the five tailbones was burned on a gas flame for 10 minutes until they were burned completely. (They had glowed red and then turned black).
They put the burned pieces into sterile boxes and brought them to a analysis laboratory in Sana'a (Al Olaki Laborytory) Dr. Saleh al Olaki, Professor for histology and pathology of the university of Sana'a analyzed the pieces and found out that the cells of the bone tissue of the tailbone ware not affected and had survived the flames (only muscles, fat and bone marrow were burned, while the cells of the tailbone were not affected).