Density-independent factors limit population size regardless of the population’s density.

Common density-independent factors include natural disasters such as tornadoes, hurricanes, floods, and fires.

TLS Online TPP Program

#Id: 1638

#Unit 4. Cell Communication and Cell Signaling

MHC molecules in outbred populations, including polygenic, polymorphism, and co-dominant expression.

 

TLS Online TPP Program

#Id: 1639

#Unit 4. Cell Communication and Cell Signaling

To display self peptide in class I to demonstrate that the cell is healthy.

TLS Online TPP Program

#Id: 1640

#Unit 4. Cell Communication and Cell Signaling

To display foreign peptide in class I to show that the cell is infected and to engage with TC cells.

TLS Online TPP Program

#Id: 1641

#Unit 4. Cell Communication and Cell Signaling

Daudi tumor cells, which are unable to synthesize β 2-macroglobulin.

TLS Online TPP Program

#Id: 1642

#Unit 4. Cell Communication and Cell Signaling

Bare lymphocyte syndrome- Defects in class II MHC transcriptional activator called CIITA.

TLS Online TPP Program

#Id: 1643

#Unit 4. Cell Communication and Cell Signaling

Class II, presentation is inhibited by treatment of the cells with an agent that blocks endocytic processing within the cell (chloroquine).