Biology sinhala - ඒඩ්ස් නවත්වන ක්‍රමය

The human immunodeficiency viruses are two species of Lentivirus that causes HIV infection and over time acquired immunodeficiency syndrome. AIDS is a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive. Wikipedia Like us on - http://bit.ly/2N4WdTK SubsCribe us on - http://bit.ly/2MPwqih


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