MLT-MLS 2026 | Study
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Updated 2026 Questions and Answers
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Rationales
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, Humoral: Events afterbinding w/ specific antigen Clone w/:Memory cells Plasma cells
Humoral: Function of effector cell Plasma cell: Produces antibodies
Cell mediated: Antigen receptor T cell receptor (TCR)
Cell mediated: Contact w/ antigen APCs present AGN w/inMHC molecules
Cell mediated: Events afterbinding w/ specific antigen Clone w/:Memory cells Effector cell
Cell mediated: Function of effector cell Th-Produces cytokines
Tc-Kills altered cells
Origin of B cells: Hematopoietic stem cells
Where are B cells made? Bone marrow
What kind of lymphopoiesis does the B cells have? antigen-independent lymphopoiesis
With the maturation of lymphocytes, what are the 3 Proliferation
processes? Expression
Selection
What does Antigen-independent lymphopoiesis mean? It does not need an antigen to activate or replicate
What % of peripheral blood lymphocytes are B cells? 10-15% of peripheral blood lymphocytes
B cell CD marker CD19 Signaling to regulate B cell development & activation
B cell CD marker CD20 Thought to be involved in B cell activation
B cell CD marker CD21 Receptor for complement breakdown component
B cell CD marker CD25 Found on activated T & B cells; receptor for interleukin-2 (IL-2);it is a growth factor
made by T cells
B cell CD marker MHC II Found on B cells; Interact w/ Th cells (T-helper); present on all stages except on
plasma cell
can be an antigen presenting cell (APC) for a T-helper cell
B cell CD marker MHC I Found on all nucleated cells
B cell CD marker CD 45R Found on all hematopoietic cells; involved in activation
CD16 on NK cells binds Fc of IgG
CD56 unique marker for NK cells