"EAT ME" signals by cancerous cell to immune cell for their own destruction

Some cancerous cell carry the answer to their own destruction, researcher at Stanfrod University had found that cancerous cell carry a protein Calreticulin (CRT) which instruct the immune cell to "KILL ME". But the reason immune cell do not follow this instruction as there is another protein CD47 which instruct immune cells "DONT KILL ME".
So the cell with high expressin CD47 blocks the function of CRT. so if we can somehow modify these property we may able to find a cure to cancer.

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