Three living species X, Y, and Z share a common ancestor T, as do extinct species U and V. A grouping that consists of species T, X, Y, and Z (but not U or V) makes up

TLS Online TPP Program

#Question id: 1741

#XL - Q Biochemistry

B-cells as distinct from T-cells:

TLS Online TPP Program

#Question id: 1742

#XL - Q Biochemistry

The T-cell receptor link to MHC–peptide is enhanced by interaction between MHC class II on the antigen-presenting cells with the following molecule on the T-cell:

TLS Online TPP Program

#Question id: 1743

#XL - Q Biochemistry

The main costimulatory signal for activation of resting T-cells is provided by ligation of:

TLS Online TPP Program

#Question id: 1744

#XL - Q Biochemistry

Which of the following events occurs earliest in T-cell signaling?

TLS Online TPP Program

#Question id: 1745

#XL - Q Biochemistry

On injection into mice, bovine serum albumin conjugated with dinitrophenol (DNP) behaves as a:

TLS Online TPP Program

#Question id: 1746

#XL - Q Biochemistry

Which is the first of the following genes to be upregulated subsequent to T-cell activation?