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University of Wurzburg

CD8 T cell priming occurs in two phases. In the activation phase (day 1), naïve T cells engage with dendritic cells (DC) for 24 hours, then detach, proliferate, and move deeper into the lymph node. In the selection phase (days 2-3), activated T cells regain sensitivity, re-engage with antigen-presenting cells, and receive IL-2 support from CD4 T cells. Regulatory T cells limit IL-2 availability, driving the expansion and differentiation of high-affinity CD8 T cells into effector cells.

Hidden Dance of T-Cells Reveals New Immune System Strategy Against Viruses

Categories Health

Artist's impression of an electrically contacted optical antenna (left) and the quantum mechanical distribution of its surface electrons. The normal distribution is shown in yellow, while the change induced by an applied voltage is shown in red.

Optical Antennas: A Leap Toward Faster Computer Chips

Categories Technology

A Matabele ant tends to the wound of a fellow ant whose legs were bitten off in a fight with termites.

Ants recognize infected wounds and treat them with antibiotics

Categories Health, Life & Non-humans

The grape wood borer (Chlorophorus varius) is one of over 33,000 insect species in Germany. The development of the insect biomass depends significantly on weather conditions, as a study published in "Nature" in 2023 shows.

Weather explains the decline and rise of insect biomass over 34 years

Categories Earth, Energy & Environment, Life & Non-humans

The figure shows the relationship between movement and regulation of insulin-producing cells in the fruit fly.

Exercise curbs insulin production

Categories Health, Life & Non-humans

Here’s how sugar promotes inflammation

Categories Health

Spinning Black Hole Powers Jet by Magnetic Flux

Categories Physics & Mathematics, Space

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