T Cells

What are the first cells in an infectious encounter?

• dendritic cells

• T cells

• macrophages

• B cells

What are normal cells?

• MHC proteins contain "self peptide"

• MHC proteins contain "self poptide"

• HHC protein contain "self peptide"

• LCM protein contain "self peptide"

What are infected cells?

• MHC expresses some pathogen peptides

• LCM expresses some pathogen peptides

• MHC expresses alot of pathogen peptides

• MHC expresses all pathgoen peptides

Define class I MHC

• defines self on all nucleated cells, presentation of extracellular pathogens

• defines self on some nucleated cells, presentation of extracellular pathogens

• mostly restricted to pAPCs, presentation of extracellular pathogens

Define class II MHC

• mostly restricted to pAPCs, presentation of extracellular pathogens

• always restricted to pAPCs, presentation of extracellular pathogens

• defines self on all nucleated cells, presentation of extracellular pathogens

What antigens are present in class I?

• HLA-A

• HLA-B

• HLA-C

• HLA-DR

What antigens are in class II

• HLA-DR

• HLA-DP

• HLA-DQ

• HLA-DT

T or F. T cells require presentation of linear epitope sequences following Ag processing

• true

• ture

What is phagocytosis?

• microbes that are engulfed by phagocytes which destroys, removes, confines antigens or its by products

• microbes that are engulfed by phagocytes which creates & invites antigens or its by products

What is antigen presentation?

• antigen fragments, cell peptides or epitope sequences that are loaded onto class I and class II MHC

• antigen fragments, cell peptides or epitope sequences that are loaded onto ONLY class I MHC

• antigen fragments, cell peptides or epitope sequences that are loaded onto ONLY class II MHC