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TIL that tattoo pigments can be transported through the lymphatic system and deposited in the lymph nodes where it then stains the lymph node tissue. This effect was observed in tissue samples taken from cadavers.

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4XJ45 TIL that in 19th Century London, John Chadwick obsessively believed that cholera was caused by 'bad air' and his actions to 'cure' it lead directly to the additional deaths of fourteen thousand Londoners
X0X4Q TIL That in the US, if your dog or cat needs a kidney transplant, you can use a shelter animal as a donor. The only stipulation being that you are now responsible for the donor animal and are required to adopt them as well.
oBg6L TIL that in 2019 LEGO polled more than 3000 kids aged 8-12 year olds about future dream professions - while a majority of kids in China (56%) wanted to be astronauts when they grow up, in the US and UK, becoming a Youtuber was the most chosen profession, 3X more popular than astronauts
E1OLW TIL a legal loophole in the UK allows alcohol to be sold without a license on a train in motion. An unlicensed distillery exploited this by setting up in a disused railway building, obtaining a steam train, and selling gin to customers while they road it back and forth from the distillery.
JYGdm TIL Mel Gibson and Liam Neeson were largely considered to play James Bond in the movie "Goldeneye". Neeson turned it down because he wasn't interested in action films at the time and Gibson was too busy with his project "Braveheart" despite being recommended by Sean Connery.