MCQ
Age of gymnosperm is
- ACenozoic era
- ✓Mesozoic era
- CPalaeozoic era
- DProterozoic era
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$I.$ blood drained from a convenient artery and anticoagulant is added (heparin)
$II.$ removal of nitrogenous waste from blood
$III.$ blood is passed through a coiled porous cellophane membrane of tube bathing in dialysis fluid $IV.$ blood is mixed with anti heparin and passed into vein
Arrange the steps