<prompt> Metalloproteins help in jaundice by the following mechanism :Increased glucoronyl transferase activityInhibit heme oxygenaseDecrease RBC lysisIncrease Y and Z receptors  <response>: B i.e. Inhibit heme oxygenaseTin Zn porphyrins and mesoporphyrins inhibits the activity of heme oxygenase Q and decrease formation of bilirubin Best method for Estimation of .Hb come in blood is - Cyanmethhemoglobin methodQ 