Antigens are proteins on the that identify the cell as self or foreign. An antibody is a protein that can bind to a specific so that the immune system can remove it more easily.
A lymphocyte is a type of white blood cell important for fighting viruses and cancers and for creating .
Antibody binding is the process by which an antibody identifies and attaches to a specific .

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explanation:

5. method

15. communicate, transport

18. component

21. learn

22. preceding

23. display

24. area

25. anomalous, unusual, unconventional

the treatment of other conditions (e.g., cystic breast disease) and for other medical reasons. Mastectomy is most effective when the cancerous tumour is discovered at an early stage and the malignant cells are localized. In order to best ensure the removal of all cancerous tissue, however, a margin of tissue surrounding a tumour and, sometimes, other nearby structures are also removed. Thus, there are several types of mastectomy, the selection of procedure depending on the location and extent of the disease (determined by X ray, thermography, and other diagnostic techniques) and the nature of the cancerous cells (determined by biopsy).

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