1 RBC lack antihen on its surface
2 RBC have life span of 120 days because of lack of telomerase enzyme
3 RBC are destroyed by our own immune system
4 RBC are killed by spleen attacker cells
life span is correct. it is attacked by spleen cells... so 3 option is incorrect.. as 3 and 4 options are contrary . so if 4 is right then obviously 3 is wrong.. think 😊
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