Why is testing of $Rh$ group necessary before blood transfusion?

  • A
    To prevent blood clotting
  • B
    To avoid immune response against $Rh$ antigens
  • C
    To increase blood volume
  • D
    To prevent infection

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The name $Rh$ blood group is derived from

Which of the following prevents the conversion of prothrombin to thrombin in an undamaged blood vessel?

Which one of the following cells secrete heparin,histamine and serotonin?

$A$ woman of blood group $O$ presented a baby of blood group $O$ which she claimed as her child. She brought a suit against a man of $AB$ blood group as the father of the child. Which statement is correct as per your judgement?

Difficult
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Match the following columns and select the correct option.
Column-$I$Column-$II$
$(a)$ Eosinophils$(i)$ Immune response
$(b)$ Basophils$(ii)$ Phagocytosis
$(c)$ Neutrophils$(iii)$ Release histaminase,destructive enzymes
$(d)$ Lymphocytes$(iv)$ Release granules containing histamine

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