Q.Total absence of plasma cells causes :

Immunodeficiency is the failure of one or more parts of the immune system, arising either from genetic developmental defects (primary immunodeficiency) or from causes such as radiation, immunosuppressive drugs, or infection (secondary immunodeficiency). AIDS (Acquired Immuno Deficiency Syndrome) is the best-known secondary immunodeficiency, caused by HIV, a Lentivirus with a spherical, envelope-covered structure containing two RNA strands, reverse transcriptase, and a protein capsid. HIV selectively infects and progressively destroys helper T cells — first replicating in macrophages via reverse transcription and DNA integration, then spreading to and depleting helper T lymphocytes — which cripples the body's ability to mount antibody re …