The 5' methyl guanosine caps added during RNA chain elongation performs what function?

1. prevents degradation by nucleases 

2. are recognized by protein factors

3. are used to identify the type of RNA

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#Question id: 1544

#XL - S Microbiology

function equivalent of MASP-2

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#Question id: 1545

#XL - S Microbiology

B cells negatively regulated by,

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#Question id: 1547

#XL - S Microbiology

follicular dendritic cells (FDCs) secrete CXCL13 and its receptor, CXCR5, which is expressed on B cells, function of this interaction ?

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#Question id: 1548

#XL - S Microbiology

B-cell survival in the follicle is dependent on?

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#Question id: 1549

#XL - S Microbiology

the decision to translate  IgM versus IgD  heavy chains is made at the level of?

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#Question id: 1550

#XL - S Microbiology

IL-4 responsible for class switch recombination (CSR) into,