First experiment on planarian regeneration conducted at China's space station

The Shenzhou-20 crew has carried out its first experiment on planarian regeneration aboard China's space station.

Planarians, flatworms with an evolutionary history spanning over 520 million years, are one of the widely used experimental animal models in biological research. These organisms demonstrate an exceptional capacity for tissue repair: when bisected, planarians can regenerate lost muscles, skin, intestines, and even an entire brain from each segment -- a process that can be repeated indefinitely.

Researchers aim to investigate how the space environment affects the regenerative processes and physiological behavior of planarians. They will also explore the molecular mechanisms behind space-induced effects on planarian regeneration, thereby advancing scientists' understanding of regenerative biology.

Inside the Wentian laboratory module, the Shenzhou-20 crew observed samples in the biotechnology experiment cabinet and used the scientific glovebox to collect solid culture samples. The collected data and samples will assist researchers on Earth in studying the microbial mechanisms affecting cell tissue culture modules.

This initiative follows the successful inclusion of zebra fish and fruit flies in science experiments conducted aboard China's space station.

The Shenzhou-20 crew will carry out 59 additional space science experiments and technology tests in fields such as space life science, microgravity physics, and new space technologies, with potential breakthroughs in cultivation of vascularized brain organoid chips, soft matter non-equilibrium dynamics, and high-temperature superconducting material preparation.

First experiment on planarian regeneration conducted at China's space station

First experiment on planarian regeneration conducted at China's space station

First experiment on planarian regeneration conducted at China's space station

Chinese President Xi Jinping visited the renovated Longfusi commercial area in Beijing's Dongcheng District on Tuesday, extending Spring Festival greetings to all Chinese people.

Xi, also general secretary of the Communist Party of China Central Committee and chairman of the Central Military Commission, paid an inspection tour of the Chinese capital from Monday to Tuesday. Arriving at the Longfusi commercial area on Tuesday, Xi was briefed on urban renewal efforts.

He stopped by a store of the traditional bakery brand Daoxiangcun, where he watched pastry-making.

At a Spring Festival market, he visited various stalls selling festive goods and talked with people there, sharing memories of his visits to the area when he was young. He also bought some specialty food and culture-themed products.

Xi said he was very pleased to see the bustling, vibrant festive scene and well-stocked holiday goods.

The Spring Festival is an important occasion for the people, Xi said, urging officials at all levels to make solid efforts in ensuring people's wellbeing and strengthening workplace safety so that everyone can enjoy a joyful Chinese New Year.

Xi wished all Chinese people good health, career success, and family happiness. He also wished the country peace and prosperity in the Year of the Horse.

Xi visits Longfusi commercial area in Beijing, extending Spring Festival greetings to all Chinese