FIG. 1.

Physical maps and MAb reactivities of four λgt11 clones each carrying a fragment from a different MSG gene. The lines show the sizes of the inserts carried in the four phage clones compared to the size of a previously characterized cloned msg gene (msg-b). The numbers at the ends of each line indicate the amino acid residues encoded by each msg gene fragment. The reactivity (+) or nonreactivity (−) of the plaques produced by each clone is indicated for each of eight MAbs.