Figure 3. Fine mapping locus 1 correlated with susceptibility to strain-specific immune killing.

(A) The distribution of strain-specific AFLP markers lost under immune selection across BAC EmaxBAC8f18. Solid markers remained absent after six generations of backcrossing under selection, hollow marker E031 reappeared in backcrossed generation four. (B) Recovery of strain-specific markers by immune selected backcross generations 1–6, the number represents the generation at which the marker first reappeared, − = did not reappear. (C) Transcribed sequences identified within locus 1 (ST = putative sulphate transporter, AMA-1 = apical membrane antigen 1 homologue, TEF = putative transcription elongation factor).