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Kennedy researchers and Columbia University engineers discover geometric underpinnings of T-cell stimulation through precise engineering of T-cell receptor geometry, building a 3D nanofabricated biomimetic surface that simulates the key components of an antigen-presenting cell.

Composite of a scanning electron micrograph and immunofluorescence image showing a T cell (SEM) on an array of clusters of T cell receptor ligands, fluorescently labeled red. The green fluorescent signal comes from phosphorylation of a component of the T cell receptor, indicating that triggering has occurred (i.e., the T cell has been stimulated).
Composite of a scanning electron micrograph and immunofluorescence image showing a T cell (SEM) on an array of clusters of T cell receptor ligands, fluorescently labeled red. The green fluorescent signal comes from phosphorylation of a component of the T cell receptor, indicating that triggering has occurred (i.e., the T cell has been stimulated).