What deficiency is indicated by poor skin test results to a range of microbial antigens such as tuberculin and mumps?

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#Question id: 1629

#Section 2: General Biology

Clonal selection occurs when antigen is encountered by:

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#Question id: 14907

#Section 1: Engineering Mathematics

Let f (x) = 2x if x < 2

               = 2 if x = 2

         = x² if x > 2

the discontinuity of f (x) at x = 2 is known as

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#Question id: 18217

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following is untrue about homology modeling?

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#Question id: 14516

#Section 1: Engineering Mathematics

The probability that a man aged 50 years will die within a year is 0.01125. The probability that out of 12 such men at least 11 will reach their fifty first birthday.

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#Question id: 8927

#Section 6: Plant, Animal and Microbial Biotechnology

Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that