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Retired NBME 13 Answers

nbme13/Block 4/Question#2 (reveal difficulty score)
An 18-year-old woman with mild mental ...
Apo B ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
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submitted by โˆ—jsmoov(25)
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This baby has abetalipoproteinemia. ("without Beta apolipoproteins"). Thus they will lack B-48 and B-100 and have absent levels of chylomicrons, VLDL, and LDL. Infants present with severe fat malabsorption and deficiencies of all fat soluble vitamins (ADEK). Lack of vitamin A renders them vulnerable to Retinitis pigmentosa and lack of VitE leads to spinocerebellar degeneration.

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