(BC) retained the lead (B) and mercury (C) in the brains of newborns to identify the concentration of inorganic mercury or lead, is injected into the yolk sac in 6 ED.
(Bc) retained the lead (B) and mercury (C) in the brains of newborns. found concentrations of lead, mercury, inorganic. Or injected into the yolk sac 6 - .