What is the structure recognized by the αβ T-cell receptor on the cell surface of an antigen-presenting cell?

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#Question id: 18075

#XL - S Microbiology

At high salt concentrations, the mRNA containing poly(A) tails binds to the complementary oligo(dT) molecules of the affinity column, and so, mRNA will be retained; all other RNA molecules can be washed through the column by further high salt solution. finally, the bound mRNA can be eluted by using

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#Question id: 18078

#XL - S Microbiology

Which of the following can be found in gymnosperms? 

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#Question id: 18078

#XL - T Zoology

Which of the following can be found in gymnosperms? 

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#Question id: 18078

#XL - R Botany

Which of the following can be found in gymnosperms? 

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#Question id: 18079

#XL - S Microbiology

Within a gymnosperm megasporangium, what is the correct sequence in which the following should appear during development, assuming that fertilization occurs? 

1. Sporophyte embryo 2. female gametophyte 

3. egg cell                 4. megaspore 

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#Question id: 18080

#XL - S Microbiology

The following are all adaptations to life on land except