Natural killer cells can attach to B cells at temporary synapses {immune synapse}, to check if they are functioning. Natural-killer-cell receptor proteins check B-cell surface proteins. If no reception, acidic organelles move to synapse and inject chemicals to kill cells. Antigen-presenting cells contact T cells {supramolecular activation cluster, immunity} at immune synapses to present protein fragments that they removed from viruses or bacteria and activate T cells. Immune-synapse outer ring is for adhesion, and central spot is for recognition. Proteins move to form patterns, using cytoskeletons.
Biological Sciences>Zoology>Organ>Immune System>Immunity Types
4-Zoology-Organ-Immune System-Immunity Types
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Date Modified: 2022.0224