The conversion of cholesterol to pregnenolone, catalyzed by cholesterol desmolase (P450scc or CYP11A1), in mitochondria

TLS Online TPP Program

#Id: 7481

#Unit 4. Cell Communication and Cell Signaling

IgE 

Present only at very low levels in blood or extracellular fluid but is bound avidly by receptors on mast cells.Antigen binding to this cell-associated IgE triggers mast cells to release powerful chemical mediators that induce reactions such as coughing, sneezing, and vomiting.

TLS Online TPP Program

#Id: 7482

#Unit 4. Cell Communication and Cell Signaling

IgD

B cell antigen receptor and may participate in B cell maturation.Exact function is still unclear, IgD may be involved in humoral immune responses by regulating B cell selection and homeostasis.

TLS Online TPP Program

#Id: 7483

#Unit 4. Cell Communication and Cell Signaling

Function of antibody 

TLS Online TPP Program

#Id: 7484

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 7485

#Unit 4. Cell Communication and Cell Signaling

Antigenic Determinants

TLS Online TPP Program

#Id: 7486

#Unit 4. Cell Communication and Cell Signaling