Selecciona la opción correcta de los menús desplegables para completar el texto.
Select the appropriate term from the drop-down list for each cellular immunology attribute.
1. ( 1. B cell, 1. T cell, 1. Natural killer cell, 1. Phagocytic cell, 1. B cell and T cell, 1. T cell and natural killer cell, 1. Natural killer cell & phagocytic cell ) Kill infected body cells
2. ( 2. B cell, 2. T cell, 2. Natural killer cell, 2. Phagocytic cell, 2. B cell and T cell, 2. T cell and natural killer cell, 2. Natural killer cell & phagocytic cell ) Target specific antigens and can produce memory cells
3. ( 3. B cell, 3. T cell, 3. Natural killer cell, 3. Phagocytic cell, 3. B cell and T cell, 3. T cell and natural killer cell, 3. Natural killer cell & phagocytic cell ) Can kill a bacterium or virus that has not yet entered one of your cells
4. ( 4. B cell, 4. T cell, 4. Natural killer cell, 4. Phagocytic cell, 4. B cell and T cell, 4. T cell and natural killer cell, 4. Natural killer cell & phagocytic cell ) A non-specifc defence