Efficient use of two-photon excitation (TPE) microscopy requires knowledge of the absolute TPE action cross sections (ATACSs) of fluorescent probes. However, these values are not available for rece...
In Alzheimer’s disease (AD), b-amyloid (Ab) plaques are tightly enveloped by microglia processes, but the significance of this phenomenon is unknown. Here we show that microglia constitute a barrie...