Small RNAs (sRNAs) not only play essential roles within their own cells but also act as signaling molecules, inducing trans-kingdom gene silencing between plants, fungi, and other organisms. Building ...

Dendritic cells and macrophages can process extracellular antigens for presentation by MHC-I molecules. This exogenous pathway may have a crucial role in the activation of CD8 + cytotoxic T ...

Lipoprotein particle metabolism can occur via the exogenous or endogenous pathway, depending whether the source of origin is dietary or hepatic. Both the exogenous and endogenous metabolic pathways of ...

MHC Class I and MHC Class II Antigen Processing Pathways Antigen processing and therefore the immune response to vaccines is generally divided into two systems, although considerable cross-over exists ...