  The existence of macroscopic regions with antibaryon excess in the matter -
dominated Universe is a possible consequence of the evolution of baryon
charged, pseudo - Nambu - Goldstone field with lepton number violating
couplings. Such regions can survive the annihilation with surrounding matter
only in the case if their sizes exceeds the critical surviving size. The
evolution of survived antimatter - regions with high original antibaryon
density inside results in the formation of globular clusters, which is made out
from antimatter stars. The origin of antimatter regions in the chosen scenario
is accompanied the formation of closed domain walls, which can collapse into
massive black holes deposed inside the high density antimatter regions. This
fact can give us an additional hint, that an anti - stars globular cluster
could be one of the collapsed - core star clusters, which populate our galaxy.
