Question

karl Landsteiner discovered
A) Blood corpuscles
B) Blood groups
C) Blood vessels
D) Proteins in Blood

Answer 1

karl Landsteiner discovered

B) Blood groups

Answer 2

Landsteiner later won the Nobel Peace Prize for his groundbreaking bloodresearch. ... Type B blood hasB proteins on the surface of the red blood cells and anti-A antibodies in the bloodplasma. Type AB blood has both A and B proteins(antigens) on the surface of the red blood cells, but no plasma proteins (antibodies).
so ur answer is d