TLS Online TPP Program
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TLS Online TPP Program
#Question id: 15523
#Unit 4. Cell Communication and Cell Signaling
The appearance of ϒδ thymocytes and αβ thymocytes during mouse fetal development. Fetal animals generate
a) more αβ T-cells than ϒδ T-cells
b) the proportion of ϒδ T-cells generated drops off dramatically after birth
c) the proportion of αβ T-cells generated drops off dramatically after birth
d) more ϒδ T-cells than αβ T cells
TLS Online TPP Program
#Question id: 15524
#Unit 4. Cell Communication and Cell Signaling
The bulk of DP thymocyte death (~95%) occurs among thymocytes that fail positive selection because
TLS Online TPP Program
#Question id: 15525
#Unit 4. Cell Communication and Cell Signaling
In the instructive model, TCR/CD4 and TCR/CD8 coengagement generates unique signals, if a thymocyte randomly generated a TCR with an affinity for MHC Class I. which thymocyte would bind with MHC class I?
TLS Online TPP Program
#Question id: 15526
#Unit 4. Cell Communication and Cell Signaling
If a thymocyte randomly generated a TCR with an affinity for MHC Class I, the TCR and CD8 would bind MHC Class I together, and generate a signal that specifically initiated a program that is
a) silenced CD8 expression
b) silenced CD4 expression
c) induced expression of genes specific for helper T-cell lineage function
d) induced expression of genes specific for cytotoxic T-cell lineage function
TLS Online TPP Program
#Question id: 15527
#Unit 4. Cell Communication and Cell Signaling
CD4 and CD8 T cells leave the thymus and enter the circulation as resting cells in which stage of the cell cycle?
TLS Online TPP Program
#Question id: 15528
#Unit 4. Cell Communication and Cell Signaling
The B7 family of protein interact with distinct receptor present on the T-cells,