The major candidate for the factor that forms the Nieuwkoop center was β-catenin (This multifunctional protein also proved to be a key player in the formation of the dorsal amphibian tissues)

TLS Online TPP Program

#Id: 1644

#Unit 4. Cell Communication and Cell Signaling

Inhibition of class I presentation observed when protein synthesis was blocked by the inhibitor emetine.

TLS Online TPP Program

#Id: 1645

#Unit 4. Cell Communication and Cell Signaling

Presentation of nonpeptide (lipid and lipid-linked) antigens derived from pathogens involves the nonclassical class I–like CD1 molecule.

TLS Online TPP Program

#Id: 1646

#Unit 4. Cell Communication and Cell Signaling

Antibodies serve as physiological bridges between an antigen present on a pathogen, and the cells or molecules that will ultimately destroy it.

TLS Online TPP Program

#Id: 1647

#Unit 4. Cell Communication and Cell Signaling

Heavy chain contain more constant region in compare to variable region, in contrast in the light chain variable and constant region are equal.

TLS Online TPP Program

#Id: 1648

#Unit 4. Cell Communication and Cell Signaling

More variability is found in the light chain.

TLS Online TPP Program

#Id: 1649

#Unit 4. Cell Communication and Cell Signaling

Heavy chain types- μ, ϒ, α, δ or ε light chain types- κ or λ