So they know it is true ^-^
The Roosevelt Corollary in 1904 justfited US intervention in the Western Hemisphere. It was an addition to the Monroe Doctrine which had wanted to prevent European intervention in the West.
<span>The question is 'lymphocytes produce special proteins against foreign invaders called ............. The correct option is B, that is, antigens. Antigens are toxins or foreign substances which stimulate immune response in the body, usually in the form of production of antibodies. Antibodies are proteins manufactured by the body which help to fight against antigens.</span>
