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it's the biggest demonstration by the iranian diaspora ever. iranians from across europe are calling on western governments to sanction the powerful revolutionary guard and to throw out iranian diplomats. now on bbc news, could transplant organs one day be created in the lab and produced on a 3d printer? click goes to sweden to find out. this week, shiona has been to sweden to see how new organs could be printed in a lab. meanwhile, lara has been creating body parts of a different kind. what's happened to my ear? nick talks to a man in a box. and the man hunting the missing cryptoque...

the headlines today... the former chancellor has confirmed that he is in the race to be the next conservative party leader and british prime minister. speculation is still rife that former prime minister borisjohnson will enter the contest. jacob rees—mogg tells the contest. jacob rees—mogg tells the bbc that mrjohnson will clearly stand. meanwhile, penny mordaunt is still in the running with 23 backers. she told the bbc that she regrets liz truss�*s mini budget. and the labour leader says his party has not got complacent, repeating calls for a general election. in other news, ...

they're mixed into different bioinks for the machine to choose between. we really design a code what tells the printer what to print, when, and in which structure. it's a lot more visible than i expected with the naked eye. a hollow blood vessel structure has been layered inside this one, and a syringe—like printhead has a different purpose. so, you can actually print cells or hair follicles to really replicate the skin. at this stage, it kind of looks like a bit of toothpaste, but actually, it's seriously complicated cells in here. while sd printed skin could be applied in surgica...

last month's election. she is due to be formally sworn in as leader of the country's most right—wing administration since world war ii. now on bbc news: could transplant organs one day be created in the lab and produced on a 3—d printer? click goes to sweden to find out. this week, we are in sweden to see how new organs can be printed and allowed. lara has created body parts of different kind.— lara has created body parts of different kind. what happened to my ear? — different kind. what happened to my ear? nikitin _ different kind. what happened to my ear? nikitin talks - to...

an increasing number of conservatives say they want to see mrjohnson secure a second period at number 10 downing street. in about ten minutes�* time, we'll have this week's edition of newswatch. but first on bbc news, click. nearly 7,000 people in the uk right now need organ transplants. sometimes they wait for these lifelines can be long and agonising. not everyone survives them. we clearly need more donors. but 3d printing might be able to offer a solution. yeah, scientists are developing a method to create organs from living tissue, which can be translated into patients who need...