--- title: Japanese Stem-Cell Scientist Guilty of Falsifying Data description: Japanese researcher Haruko Obokata manipulated and falsified images of a stem-cell breakthrough, according to a committee of investigators canonical: https://time.com/45541/stem-cell-scientist-guilty-of-falsifying-data/ author: Alice Park article:opinion: false article:content_tier: free article:published_time: 2014-04-01T18:01:50.000Z article:modified_time: 2026-02-21T07:04:36.213Z article:section: Health og:title: Japanese stem cell scientist guilty of falsifying data og:description: Japanese researcher Haruko Obokata manipulated and falsified images of a stem-cell breakthrough, according to a committee of investigators og:url: https://time.com/45541/stem-cell-scientist-guilty-of-falsifying-data/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltf6d536e917dfc87d/6986886b169ab03a7e2788e8/465836311.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 4608 og:image:height: 2592 og:image:alt: Researchers Find Way To Create Pluripotent Cells With Fewer Drawbacks og:type: article twitter:card: summary_large_image twitter:title: Japanese stem cell scientist guilty of falsifying data twitter:description: Japanese researcher Haruko Obokata manipulated and falsified images of a stem-cell breakthrough, according to a committee of investigators twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltf6d536e917dfc87d/6986886b169ab03a7e2788e8/465836311.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # Stem-Cell Scientist Guilty of Falsifying Data > Sponsored content. 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Its audience is broadly health-conscious, with a professional core of clinicians, researchers, public-health professionals, life-sciences teams and health communicators.  by [Alice Park](https://time.com/author/alice-park/)  ## Alice Park Senior Correspondent Apr 1, 2014 6:01 PM UTC  Japanese biologist Haruko Obokata in her laboratory at the Riken Center for Developmental Biology in Kobe, Japan, on Jan. 28, 2014 Japanese biologist Haruko Obokata in her laboratory at the Riken Center for Developmental Biology in Kobe, Japan, on Jan. 28, 2014The Asahi Shimbun/Getty Images  by [Alice Park](https://time.com/author/alice-park/)  ## Alice Park Senior Correspondent Apr 1, 2014 6:01 PM UTC Haruko Obokata, a stem-cell scientist at the Riken Center for Developmental Biology in Kobe, Japan, has been [found guilty of misconduct](http://www.nature.com/news/stem-cell-scientist-found-guilty-of-misconduct-1.14974) by a committee of investigators led by her own government-funded institute after other researchers questioned the findings. In January, Obokata, with colleagues both in Japan and in the U.S., published two papers claiming to describe a surprising new way to generate stem cells from already developed cells. The process involved [simply stressing the mouse cells](http://time.com/2583/growing-your-own-tissue-just-add-stress-and-stir/), either with an acidic solution or with physical force, to turn back the clock on their development and revert back to an earlier stem-cell stage in which these cells could then be made into any of the body’s hundreds of cell types. After other researchers could not replicate the results, however, one of the senior scientists on the paper, Teruhiko Wakayama, called for the two papers, which [appeared in the journal](http://www.nature.com/nature/journal/v505/n7485/full/nature12968.html) _Nature_, [to be retracted](http://time.com/20082/stem-cell-researcher-calls-for-retraction-of-his-own-work/). Wakayama said he was only able to repeat the experiment successfully with Obokata’s help, but wasn’t able to do so on his own. More skepticism arose as scientists pointed out discrepancies and irregularities in the images of the stem cells published in the papers, and the Riken committee concluded that some of the images were enhanced or falsified to improve the results. The committee did not determine whether the actual technique, known as stimulus-triggered activation of pluripotency (STAP), is valid or not. A scientist at the Chinese University of Hong Kong reported on [ResearchGate](http://www.researchgate.net/) that he had partially repeated Obokata’s experiment, but that claim hasn’t been verified. Officials at _Nature_ are also investigating the study. This isn’t the first time that falsified data has plagued the stem-cell field. In 2006, South Korean veterinary scientist Hwang Woo-suk claimed to have successfully used the cloning technique on human cells to generate patient-specific stem cells, but it later emerged that the stem cells came from already existing embryos. In a statement in Japanese translated by the journal _Science_, Obokata said she would appeal the judgment. “I am filled with feelings of indignation and surprise,” she wrote. “At this stage, considering the STAP cell discovery itself to be fabricated is a misunderstanding; I cannot possibly accept this.” Riken scientists will attempt to replicate her research, along with outside experts in the stem-cell field. The institute plans to set up a new committee to determine Obokata’s punishment. \[[_Nature_](http://time.com/45378/families-demand-answers-from-gm-murderers/)\] ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/45541/stem-cell-scientist-guilty-of-falsifying-data/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/45541/stem-cell-scientist-guilty-of-falsifying-data/"},"headline":"Stem-Cell Scientist Guilty of Falsifying Data","datePublished":"2014-04-01T18:01:50.000Z","dateModified":"2026-02-21T07:04:36.213Z","description":"A committee has found Haruko Obokata, a scientist based in Kobe, Japan, guilty of misconduct for falsifying research data that would have rocked the scientific community if proved to be true","url":"https://time.com/45541/stem-cell-scientist-guilty-of-falsifying-data/","keywords":["Stem Cells"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/bltf6d536e917dfc87d/6986886b169ab03a7e2788e8/465836311.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Alice Park","jobTitle":"Senior Correspondent","url":"https://time.com/author/alice-park/"}],"articleSection":"Health","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/bltf6d536e917dfc87d/6986886b169ab03a7e2788e8/465836311.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"Researchers Find Way To Create Pluripotent Cells With Fewer Drawbacks","caption":"Researchers Find Way To Create Pluripotent Cells With Fewer Drawbacks","creditText":"The Asahi Shimbun/Getty Images","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/health/","name":"Health"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/stem-cells/","name":"Stem Cells"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/45541/stem-cell-scientist-guilty-of-falsifying-data/","name":"Stem-Cell Scientist Guilty of Falsifying Data"}}]}] ```