関連ワード:
why is type o rh-negative the universal donor why is type o rh-negative the universal donor quizlet why is type o negative the universal donor why is blood type o negative a universal donor why is type o negative blood called the universal donor why is type o negative blood considered the universal donor why is type o negative blood known as the universal donor why is blood type o negative called the universal donor quizlet why is type o negative blood known as the universal donor why is o positive not a universal donor
