By Bal Phondke
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Nor can the forces easily disobey their basic orders to tolerate self and go into war only against non-self. The army watches its own defeat helplessly. Scientists have discovered in recent years that the cancer cells sport on their surface some specific antigens unique to them. These are known as tumour-specific transplantation antigens (TST A). There is hope, therefore, that the body's army can be trained to recognize these as foreign and look upon the tumoUi as a foreign graft. The army's own inclination to drive out grafts can then be called upon to provide relief.
It is with these arms that the antibody missile latches on to the antigen firmly. Both the chain5 take part in this antigenic capture. Scientists have likened this to holding an apple with fingers of both hands. Since the hinge region of the Y-shaped molecule is flexible, the antibody arms can bend when necessary. The molecule then looks like a capital T. The exact sequence of the amino acids in a chain gives it its own special character. Since there are such large numbers of these in each chain, every antibody molecule already acquires a character different from others in many ways.
The transplantation of an organ is being looked upon as an operation similar to transfusion of blood.