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hawkins1346 hawkins1346
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6 years ago
Which of the following determines blood type A in the ABO blood typing system?
 a. the presence of only N-acetyl-D-galactosamine antigen
  b. the presence of only D-galactose antigen
  c. the presence of both N-acetyl-D-galactosamine and D-galactose antigens
  d. the absence of both N-acetyl-D-galactosamine and D-galactose antigens
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6 years ago
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