title: [Change in the nitrogen content of extractive substances in the liver and gonads of Baltic cod in relation to processes of ovo- and spermatogenesis].
mesh_terms: D000818:Animals; D005260:Female; D005399:Fishes / Q000502:physiology*; D008099:Liver / Q000378:metabolism*; D008297:Male; D009584:Nitrogen / Q000378:metabolism*; D010053:Ovary / Q000378:metabolism*; D010060:Ovulation; D013091:Spermatogenesis; D013737:Testis / Q000378:metabolism*
chemical_list: D009584:Nitrogen
vernacular_title: Izmenenie soderzhaniia azota ékstraktivnykh veshchestv v pecheni i gonadakh baltiĭskoĭ treski v sviazi s protsessami ovo- i spermatogeneza.