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TLS Online TPP Program

#Id: 3245

Common types of hydrolytic DNA damage.

Deamination of cytosine creates uracil

Depurination of guanine by hydrolysis creates apurinic deoxyribose

Deamination of 5-methylcytosine generates a natural base in DNA, thymine

#Unit 3. Fundamental Processes #DNA damage and repair mechanisms #Part B Pointers
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TLS Online TPP Program

#Id: 10378

#Unit 4. Cell Communication and Cell Signaling

Codominant Expression
TLS Online TPP Program

#Id: 10379

#Unit 4. Cell Communication and Cell Signaling
TLS Online TPP Program

#Id: 10380

#Unit 4. Cell Communication and Cell Signaling

IFN- ¥ has been shown to induce expression of the class II transcriptional activator (CIITA). 
TLS Online TPP Program

#Id: 10381

#Unit 4. Cell Communication and Cell Signaling

IL-4 increases expression of class II molecules in resting B cells, turning them into more efficient APCs.
TLS Online TPP Program

#Id: 10382

#Unit 4. Cell Communication and Cell Signaling

Expression of class II molecules by B cells is down-regulated by IFN-¥.
TLS Online TPP Program

#Id: 10383

#Unit 4. Cell Communication and Cell Signaling

Corticosteroids and prostaglandins can also decrease expression of class II MHC molecules.