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Results from the Borexino Experiment

1. IntroductionThe neutrino oscillations were discovered for atmospheric neutrinos.However, many years earlier solar neutrino experiments presented the de-ﬁciency of electron neutrinos, which is now also explained in terms of theneutrino oscillations. Elements of the neutrino PMNS mixing matrix arededucedfromstudiesofsolar,reactor,atmosphericandacceleratorneutri-nos. The real time measurement of the ﬂux of sub MeV solar neutrinosis presently very valuable to conﬁrm the low energy behavior of the neu-trinosurvivalprobabilityP