Here, within the Scale-Symmetric Theory (SST), is presented some recapitulation concerning structure of proton. It shows that distribution of gluons described within the Quantum Chromodynamics is incorrect - there appears the spin crisis. The SST shows that there appear three super-dense fields composed of the carriers of gluons i.e. of the luminal Einstein-spacetime components i.e. of the neutrino-antineutrino pairs. The three super-dense gluon fields follow from the short-distance quantum entanglement and/or confinement of the Einstein-spacetime components and they are as follows: the torus/charge (its surface mass density is about 300,000 times higher than a plane in the Einstein spacetime; external radius is about 0.7 fm), central condensate (its mass density is about 3 times greater than 23 powers of ten kilograms per cubic meter; radius is about 0.009 fm) and relativistic pion on the S orbit (radius of the orbit is about 1.2 fm). Range of the strong interactions is about 3 fm. Within such model we calculated the rigorous mass, spin and two radii (the electron radius and muon radius) of proton. The torus/charge is spinning and its spin is half-integral. We can compare the densities of the super-dense gluon fields with the mean mass density of proton on assumption that its radius is the range of the strong interactions: about 1.54 times greater than 16 powers of ten kilograms per cubic meter. Barbara Jacak, a professor of physics at the University of California, Berkeley, claims that the much faster than expected formation of baryonic-plasma droplets and the spin crisis follow from existence of a super-dense gluon field instead discrete gluons - it is consistent with SST. Here as well are calculated the fundamental quantities characteristic for partonic plasma - they are consistent with the PHENIX data. Among other things, a puzzle of anomalous enhancement of (anti)protons relative to pions is solved.