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bursa of Fabricius

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noun Ornithology.
a lymphoid gland of the cloaca in birds, believed to function in disease resistance, and closing or disappearing as the bird ages.
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Origin of bursa of Fabricius

After Hieronymus Fabricius ab Aquapendente (1537–1619), Italian anatomist, who discovered it
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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