The aLeaves has moved to NIG server. is a new URL.

aLeaves allows you to collect homologs of the sequence of your interest. Those sequences can be passed on to the web server for sophisticated multiple alignment, and then to tree building. This initial process one can perform here is just like collecting leaves (termini of trees) from diverse animals. This is why we designated this tool 'aLeaves'.

To cite aLeaves

aLeaves facilitates on-demand exploration of metazoan gene family trees on MAFFT sequence alignment server with enhanced interactivity.
Shigehiro Kuraku, Christian M. Zmasek, Osamu Nishimura, and Kazutaka Katoh.
Nucleic Acids Research, 2013. 41 (W1): W22-W28. 

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