Regulatory T cells inactivate traditional T cells.

TLS Online TPP Program

#Id: 8461

#Unit 1. Molecules and their Interaction Relevant to Biology

The interactions between R groups, particularly those spaced three (or four) residues apart; The assembly is said to have a coiled coil structure because each α helix itself follows a helical path.

TLS Online TPP Program

#Id: 1055

#Unit 5. Developmental Biology

AER of the fin bud changes into an apical ectodermal fold that promotes fin ray development.

TLS Online TPP Program

#Id: 1389

#Unit 4. Cell Communication and Cell Signaling

Myosin light-chain kinase (MLCK) phosphorylates MLC and regulated by the level of cytosolic free Ca2+.

TLS Online TPP Program

#Id: 747

#Unit 3. Fundamental Processes

A:T and G:C base pairs have same geometry that’s why DNA polymerase has only one catalytic site for polymerization 

TLS Online TPP Program

#Id: 5513

#Unit 10. Ecological Principles

The size of a population is determined by a balance between births, immigration, deaths and emigration.