20 14, 1 At the end of the year, the research team led by Xiao Haruko announced that a brand-new "universal cell" STAP had been made successfully. This kind of cell is named "pluripotent stimulus-acquired" cell, referred to as STAP cell.

The preparation method is very simple. Cells taken from mouse spleen were soaked in weak acidic solution with pH value similar to that of black tea for 25 minutes, and new cells appeared after several days of culture. Previously, the scientific community has always believed that once the function of a cell is fixed, it is impossible to become a "universal cell" under this level of stimulation. Therefore, this achievement is regarded as an epoch-making and significant achievement that subverts the common sense of life science. 2065438+200465438+129 October, this research result was published in the electronic edition of the British science magazine Nature.

Bao Fang Haruko Jr., head of the research team, said: Unlike iPS cells and other technologies, the highlight of this innovative technology is that cells can change simply by changing the external environment and giving stimulation. She believes that this technology should be able to make contributions in the fields of regenerative medicine and immune research.

This document is suspected of forgery.

Shortly after Bao Fang Haruko's paper was published, some outside experts pointed out that the images in the paper were unnatural and suspected to have been processed. Some foreign colleagues repeated the experiment with the method introduced in the paper, but they could not reproduce the results.

The results released by Japanese media confirmed the fraud.

Japanese media reported on June 3, 2065438+April that the cells used in STAP experiment were tested for genes, and the results showed that they did not exist.