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til immune cells will use their DNA to form nets to capture and kill pathogens killing themselves in the process, a trait found in all multicellular life.

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8ayy4 TIL that the Goldfish Crackers inventor created them for his wife's birthday and in the shape of her astrological sign which is Pisces and is symbolized by 2 fish.
BM7W TIL it is the 105th anniversary of the Tunguska Event - the largest “impact event” on or near Earth in recorded history, and had scientists confused for many years.
l7K9a TIL prior to 1972, the NFL did not calculate ties in a team's winning percentage. This is why the Spartans whose Win-Loss-Tie record was 6-1-4 (.857 win %) and the Bears at 6-1-6 (.857) went to the first NFL playoff game in 1932 and the Packers at 10-3-1 (.769) were not declared the NFL champions.
OZ14 TIL that Kim Jong-Il’s eldest son, Kim Jong-nam, was wideley consider to be the heir apparent to the title of Supreme Leader of North Korea until he attempted to enter Japan with a fake passport so that he could go to Disneyland
nrjB TIL that Hitler planned to reduce the “non-German population” in occupied countries by “persuading them that vaccination and the like are really most dangerous”.