( 3 ) h-tyrosine labeling of igm produced by meyloma cells and radio-iodination of igm in solution gave the same ratios of microl radioactivity as radiolabeling of igm on cells , indicating that the tyrosine residues of l and micro-chains of cell surface igm are available to the lactoperoxidase during the iodination .
C0007634
cells
C0699040
of cell surface