The traffic lights at three different road crossing change after every 48 sec , 72 sec, and 108 sec. Respectively . If they all change simultaneously at 8 : 20 : 00 hours , then at what time will they again change simultaneously ?

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#Question id: 1873

#Section 2: General Biology

Mutations in the gene encoding which of the following most commonly results in severe combined immunodeficiency (SCID)?

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#Question id: 1874

#Section 2: General Biology

Which of the following is the single immunodeficiency disease that most profoundly affects CD4-positive T-cells?

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#Question id: 1875

#Section 2: General Biology

What is the best description of an antibody that would prevent infection with HIV?

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#Question id: 1876

#Section 2: General Biology

What is the only HIV vaccine employed to have provided any evidence of efficacy?

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#Question id: 1877

#Section 2: General Biology

Which of the following is an example of an HIV-1 restriction factor?

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#Question id: 1878

#Section 2: General Biology

Which of the following is the most prevalent primary immunodeficiency disease?