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During immune complex binding complement protein C1q attaches to
constant region Fc of an Ab
fab region of an Ab
hypervariable region of an Ab
light chain region of an Ab
framework region of an Ab
The regulatory T lymphocytes function can e characterized with the following statement
Tregs may inhibit autoreactive lymphocytes
Tregs may inhibit hypersensitivity reactions
Tregs may be responsible for developing tolerance to tumor antigens
Tregs play a role in the food tolerance development
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specificity means the ability of immune system ro react on various antigens in a different way
passive adoptive immunity do not lead to memory development
T-naive cells are cells that have never men antigent on the periphery they are specific for
clonal expansion of lymphocytes means its intensive apoptosis
plasmatic cells are crucial for humoral immunity
Clonal deletion of lymphocytes during peripheral tolerance development means
Apoptosis of alloreactive naive T-cells
Apoptosis of mature autoreactive lymphocytes
Apoptosis of myeloid cell progenitors
V and J gene rearrangement in TCR
Cell activation by co-stimulatory signal
IgA Antibody directed against outer membrane protein (OmpA-1) may be recognized
Specifically by FcR
Nonspecifically by FcR
Nonspecifically by OmpA-1 protein
Specifically by PAMP
By none of the above mentioned
Naive lymphocytes needs direct interaction with antigen presenting cell to be activated. So-called first signal of activation comes from
Recognition of an antigen via MHCII molecules
Recognition of an antigen via MHCI molecules
Recognition of an antigen vi TCR or BCR
Activated CTLA-4 molecule on lymphocytes
Activated CD80/CD86 molecules on APC
CD80/CD86 surface molecules on antigen presenting cells are needed for
Specific antigen recognition
Specific activation of TCR on T-cells
Co-stimulation necessary for T-cell activation
For development of so-called 1st signal for T-cell activation
For development of so-called 2nd signal for APC
The T-cell that encounters an antigen for which it has a specific receptor may finally
Be activated into an effector cell
Be activated into a memory cell
Be activated and/or undergo apoptosis
Ignore the presence of the antigen
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