[Modulators of the regulatory protein activity acting at microdoses].

New, previously not studied bioregulators active in the ultra low doses corresponding of 10(-8) - 10(-17) mg/ml have been isolated from vitreoretinal tissue of eye. It has been shown that these bioregulators comprise some regulatory peptides-modulators represented by proteins with molecular weights 15-70 KDa one of which is bovine serum albumin. Correlation between the nanosize of bioregulators and their ability to show activity in ultra low doses is established.