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L21 may refer to. [1]

5 relations: Daimler L21, Haplogroup R1b, HMS L21, Ribosomal protein L21 leader, USA-193.

Daimler L21

The Daimler L21 or Daimler-Klemm L21 was a light twin engined, single seat, parasol winged sports aircraft built in Germany.

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Haplogroup R1b

Haplogroup R1b, also known as haplogroup R-M343, is the most frequently occurring Y-chromosome haplogroup in Western Europe, as well as some parts of Russia (the Bashkir minority), Central Asia (e.g. Turkmenistan) and Central Africa (e.g. Chad and Cameroon).

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HMS L21 was a L-class submarine built for the Royal Navy during World War I. The boat was not completed before the end of the war and was sold for scrap in 1939.

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Ribosomal protein L21 leader

This family is a putative ribosomal protein leader autoregulatory structure found in B. subtilis and other low-GC Gram-positive bacteria.

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USA-193, also known as NRO launch 21 (NROL-21 or simply L-21), was a U.S. military reconnaissance satellite (radar imaging) launched on December 14, 2006.

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Redirects here:

L 21, L-21, L21 (disambiguation).


[1] https://en.wikipedia.org/wiki/L21

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