MT3 may refer to:
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Melatonin receptor 1C
Melatonin receptor 1C, also known as MTNR1C, is a protein that is encoded by the ''Mtnr1c'' gene. This receptor has been identified in fish, amphibia, and birds, but not in humans.
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Further reading
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Metallothionein-3
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Montana Highway 3
Montana Highway 3 (MT 3) is a highway in central Montana extending north from Billings to Great Falls.
Route description
At its southern end, MT 3 begins at I-90 in Billings and travels northwest to US 12 near Lavina – t ...
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