Proportion of base pairs that differ between sequences(D) 

D= 2rt

r  = rate of divergence per base pair per million  

T = time

TLS Online TPP Program

#Id: 10344

#Section 2: General Biology

B- cell maturation

TLS Online TPP Program

#Id: 10368

#Section 2: General Biology

Class II MHC glycoproteins expressed predominantly on pAPCs, where they primarily present exogenous antigenic peptides to CD4+ T cells.

TLS Online TPP Program

#Id: 8162

#Section 3: Genetics, Cellular and Molecular Biology

For selective export of certain membrane proteins from the ER contain a di-acidic sorting signal (Asp-X-Glu, or DXE), which binds to the Sec24 subunit of the COPII

TLS Online TPP Program

#Id: 7833

#Section 2: General Biology

TLS Online TPP Program

#Id: 10369

#Section 2: General Biology

Class III MHC genes encode several different proteins, some with immune functions, include the complement components C4, C2, and factor B, TNF-α and Lymphotoxin-α [TNF- α].