ÑÒÀÒÜß THE BIOLOGICAL IMPORTANCE OF ALUMINIUM IN THE FOOD CHAIN OF ANIMALS AND MAN: INTAKE, APPARENT ABSORPTION RATE, BALANCE AND LIMITING CONCENTRATIONS ÁÈÎËÎÃÈ×ÅÑÊÎÅ ÇÍÀ×ÅÍÈÅ ÀËÞÌÈÍÈß Â ÏÈÙÅÂÛÕ ÖÅÏßÕ ÆÈÂÎÒÍÛÕ È ×ÅËÎÂÅÊÀ: ÏÎÒÐÅÁËÅÍÈÅ, ÓÑÂÎÅÍÈÅ, ÁÀËÀÍÑ È ÏÐÅÄÅËÜÍÛÅ ÊÎÍÖÅÍÒÐÀÖÈÈ