TOPAL scans a multiple sequence alignment for evidence of recombinant sequences, prior to phylogenetic analysis.
Availability: The TOPAL package may be accessed at http://www.bioss.sari.ac.uk/grainne, and by anonymous ftp at ftp.bioss. sari.ac.uk in the directory pub/phylogeny/topal.
Contact: grainne@bioss.sari.ac.uk