Expression of class II molecules by B cells is down-regulated by IFN-¥.

TLS Online TPP Program

#Id: 7739

#Section 2: General Biology

Atoms are characterised by:

Radius

Ionization energy

Electron affinity

Electronegativity

Metallic character

Oxidation potential

TLS Online TPP Program

#Id: 9168

#Section 3: Genetics, Cellular and Molecular Biology

TLS Online TPP Program

#Id: 7951

#Section 3: Genetics, Cellular and Molecular Biology

First sugar residue is attached to dolichol by a high-energy pyrophosphate linkage & the other sugars are added by glycosidic bonds

TLS Online TPP Program

#Id: 8862

#Section 3: Genetics, Cellular and Molecular Biology

In vertebrates, stabilization of cohesins requires the cohesin-associated factor sororin.

TLS Online TPP Program

#Id: 8961

#Section 3: Genetics, Cellular and Molecular Biology

No matter how it is born, a new gene starts its life as a single copy in the population.

As with any new mutation, by far the most likely outcome is that it will be lost by random drift or selection over the next few generations