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TLS Online TPP Program

#Question id: 2053

The single best chance of a tissue graft being accepted in a human recipient is if it is:

#XL - S Microbiology

  1. An isograft

  2. An allograft given under the cover of potent immunosuppression

  3. A xenograft from a pig in which the gene for α-1,3-galactosyltransferase has been “knocked-out” and therefore the Galα-1,3-Gal epitope eliminated

  4. Given to a recipient that is treated with anti-CD3

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TLS Online TPP Program

#Question id: 27347

#XL - T Zoology

The width (helical diameter) of the double helix in B-form DNA in nm is______?
TLS Online TPP Program

#Question id: 2166

#XL - S Microbiology

Typical ion/ligand concentrations are
TLS Online TPP Program

#Question id: 418

#XL - R Botany

Biological oxidation-reduction reactions always involve:
TLS Online TPP Program

#Question id: 19594

#XL - P Chemistry

A well stoppered thermos flask contains some ice cubes. This is an example of
TLS Online TPP Program

#Question id: 20143

#XL - P Chemistry

The ratio of energy of the electron in ground state of hydrogen to the electron in first excited state of Be+3 is