the three native fragments were designated ( f1 ) 2f2 , f3 , and 7s , and the antibodies that specifically recognize each fragment were called , respectively , ia8 , iib12 , and id2 . by electron microscopy , monoclonal antibody ia8 recognized an epitope located in the center of fragment ( f1 ) 2f2 and in tetramers of type iv collagen at a distance of 288 nm from the 7s domain , the region of overlap of four type iv molecules .
C0003241
antibodies
C0003250
monoclonal