Microbial growth curve composed of four distinct phases of growth

Lag phase

Exponential or log phase

Stationary phase

Death or decline phase

TLS Online TPP Program

#Id: 1894

#Unit 4. Cell Communication and Cell Signaling

The decision of double-positive thymocytes to become helper CD4 or cytotoxic CD8 T cells.

TLS Online TPP Program

#Id: 1895

#Unit 4. Cell Communication and Cell Signaling

T-Cell Activation and Differentiation

TLS Online TPP Program

#Id: 1896

#Unit 4. Cell Communication and Cell Signaling

Regulatory T cells inactivate traditional T cells.

TLS Online TPP Program

#Id: 1897

#Unit 4. Cell Communication and Cell Signaling

Three signals are required for activation of a naïve T cell

TLS Online TPP Program

#Id: 1898

#Unit 4. Cell Communication and Cell Signaling

T-cell costimulatory

TLS Online TPP Program

#Id: 1899

#Unit 4. Cell Communication and Cell Signaling

Negative costimulation