Anamnestic Response

Diagram of a Peyer's Patch

Animation showing ADCC contact by NK cells

Animation showing apoptosis by NK cells

Binding of Peptide Epitopes from Exogenous Antigens to MHC-II Molecules

Animation showing MHC-II molecules binding epitopes from exogenous antigens

Binding of Peptide Epitopes from Endogenous Antigens to MHC-I Molecules by a Dendritic Cell

Animation showing MHC-I molecules binding epitopes from endogenous antigens by an antigen-presenting dendritic cell

Animation showing the activation of a macrophage by a TH1 cell

An Antigen-Presenting Dendritic Cell Presenting MHC-I with Bound Peptide to a Naive T8-lymphocyte having a Complementary T-Cell Receptor

Animation showing a naive T8-lymphocyte recognizing epitopes on MHC-I via its TCR and CD8

Animation showing neutralization of a virus

Animation showing an effectorT4-lymphocyte interacting with an activated B-lymphocyte

Illustration of B-lymphocyte and T-Lymphocytes Recognizing Antigens in a Lymph Node

animation showing the binding of peptide epitopes to MHC-II molecules by a B-lymphocyte

animation showing an effector T4-lymphocyte recognizing epitopes bound to MHC-II molecules on a B-lymphocyte

Animation showing cytolysis of a Gram-negative bacterium by MAC

Animation showing damage to a viral envelope by MAC

Animation showing cytolysis of an infected human cell by MAC

animation showing opsonization and intracellular destruction

Opsonization of a Helminth by IgE and Eosinophils

Animation showing opsonization of a virus

Activation of a B-lymphocyte through the Cross Linking of B-Cell Receptors by TI-2 Antigens

Section of a Spleen Showing Red Pulp and White Pulp

Proliferation and Differentiation of a B-Lymphocyte after Interaction with an Effector T4-Helper Lymphocyte

Animation showing neutralization of an exotoxin

Proliferation and Differentiation of a B-Lymphocyte after Interaction with an Effector T4-Helper Lymphocyte

Differentiation of B-lymphocytes into Plasma Cells and B-Memory Cells

Animation showing antibodies blocking bacterial adherence to host cell

Agglutination of Microorganisms

Animation showing a CTL triggering apoptosis by way of perforins and granzymes

Animation showing CTL-induced apoptosis of a virus-infected cell

A T4-Lymphocyte Recognizing Epitope_MHC-II on an Antigen-Presenting Dendritic Cell

Animation showing a naive T4-lymphocyte recognizing epitopes on MHC-II via its TCR and CD4

Structure of a Lymph Nodes

Cytokine-Induced Proliferation and Differentiation of an Activated T8-Lymphocyte

Activation of a B-lymphocyte by way of LPS Binding to Toll-like Receptors

Interleukin-Induced Proliferation of an Activated T4-Lymphocyte