Constitutive defenses are costly to the plant. The production of secondary metabolites requires a significant energy investment derived from primary metabolism, which is then unavailable for use in growth and reproduction.

TLS Online TPP Program

#Id: 10363

#Unit 4. Cell Communication and Cell Signaling

Type 2 T-independent

TLS Online TPP Program

#Id: 10364

#Unit 4. Cell Communication and Cell Signaling

Properties of thymus-dependent and thymus-independent antigens

TLS Online TPP Program

#Id: 10365

#Unit 4. Cell Communication and Cell Signaling

Antigen pieces are held within the binding groove of a cell surface protein called the major histocompatibility complex (MHC) molecule which recognized by T cell

TLS Online TPP Program

#Id: 10366

#Unit 4. Cell Communication and Cell Signaling

Class I MHC, glycoproteins expressed on the surface of nearly all nucleated cells; the major function of the class I is presentation of endogenous peptide antigens to CD8+ T cells.

TLS Online TPP Program

#Id: 10367

#Unit 4. Cell Communication and Cell Signaling

Daudi tumor cells, which are unable to synthesize β 2-microglobulin. 

TLS Online TPP Program

#Id: 10368

#Unit 4. Cell Communication and Cell Signaling

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