નીચે આપેલ પૈકી, એઇડ્રેસ \((AIDS)\) માટે જવાબદાર એજન્ટ \(HIV\) માટે શું સાચું છે ?

(d) : \(HIV\) is spherical virus with a diameter of about \(90-­120\ nm\). Its genome consists of a single­ stranded \(RNA\) filament segmented into two identical filaments and associated with reverse transcriptase enzymes. The envelope consists of a lipid bilayer derived from host cell membrane and projecting knob like glycoprotein spikes. It contains two protein coats. \(HIV\) is a retrovirus that attacks helper \(T\) cells. Without an adequate supply of helper cells, the immune system cannot signal \(B\) cells to produce antibodies to kill infected cells, thus body becomes susceptible to infections. This immune deficiency is described by the name acquired immune deficiency syndrome or \(AIDS\).