CD8A and infection: In contrast, CD8 T cells increased their instantaneous and average per cell speeds between 6.5 and 7 days post-infection (v ̄ = 5.67μm/min versusv ̄ = 6.03μm/min andv ̄ = 6.29μm/min versusv ̄ = 7.04μm/min, Supplemental Figure S2C&E) and the instantaneous and average (per cell) turning angles also increased with time since infection (θ ̄ = 68° versusθ ̄ = 76.2° andθ ̄ = 64° versusθ ̄ = 70.9°, Supplemental Figure S2D&F).