PROPERTIES OF RBC:
(1) Haemolyis: IF a RBC is kept in hypotonic solution it swells and finally ruptures liberating haemoglobin this is known as haemolysis
(2) Roulex Formation: it is the property or RBC to come together over one another like a pile of coins
(3) Suspension Stability: RBCs remain suspended in plasma as long as blood is flowing
(4) Erythrocyte Sedimentation Rate (ESR) : If RBCs are allowed to remain stationary in a vertical tube containing an anticoagulant they settle down leaving clear plasma as supernatant fluid Erythrocytes Sedimentation Rate (ESR) is defined as mm of clear plasma formed at the top of vertical column in an hour stability is opposite of ESR i.e inversely propotional to ESR. Normally ESR is 1-7 mm/hour is males and 3 to 12 mm/hour in females
(5) Agglutination : Red blood corpuscles also contain specific antigens called agglutinogens if they are exposed to specific agglutinins clumping of RBCs takes place as an antigen antibody reaction this is agglutination
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