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Kaplan Qbank USMLE



Author4 Posts
  #1

26. An African American male newborn is born at term with pink-white skin, white hair, and translucent irises. His eyes seem sensitive to bright light. Pregnancy and delivery were uncomplicated. Which of the following is the most likely cause of this newborn's condition?

A. Decreased number of melanocytes in the skin
B. Decreased number of melanosomes
C. Failure of neural crest cell differentiation into melanocytes
D. Lack of Golgi complex in melanocytes
E. Lack of tyrosinase activity in melanocytes



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fight possessed

  #2

E.


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  #3

its albinism, and is associated with tyrosinase deficiency! [autosomal recessive]

E. Lack of tyrosinase activity in melanocytes




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  #4

E.............tyrosinase deficiency.....grin

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i m not perfect but i wanna get close to it......







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