H3.3 is expressed throughout the cell cycle, in contrast to most histones that are expressed during S phase during replication.

TLS Online TPP Program

#Id: 4669

#Unit 13. Methods in Biology

The bacterium Streptococcus pyogenes, for example, expresses cell-wall proteins called M antigens. Antibodies produced to streptococcal M antigens have been shown to cross-react with several myocardial and skeletal muscle proteins and have been implicated in heart and kidney damage following streptococcal infections. 

TLS Online TPP Program

#Id: 7125

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 3211

#Unit 4. Cell Communication and Cell Signaling

Three mechanisms can produce oncogenes from the corresponding proto-oncogenes:
Point mutation
Chromosomal translocation
Amplification

TLS Online TPP Program

#Id: 1986

#Unit 3. Fundamental Processes

RNA polymerases I or III do not have a CTD so no capping is stimulated

TLS Online TPP Program

#Id: 9283

#Unit 6. System Physiology – Plant

Three factors are important in maintaining low O2 concentrations in nodules. 

First, entry of O2 into the nodule is controlled by a variable‐permeability barrier in the nodule parenchyma