The J-PET detector designed for positron emission tomography (PET) is the first system based on polymer scintillators and used for imaging related to this type of medical diagnosing. The unique construction of detector allows also testing discreet symmetries in the field of basic-research. The potential of J-PET project has been noticed among others by CERN. The current issue of its courier contains article dedicated to J-PET: https://cerncourier.com/j-pets-plastic-revolution/